Testing Yokohama S-Drive Tires on an E30 M3

Posted by Miles Wilson Sept. 19, 2017, 2:15 p.m.
https://www.youtube.com/embed/Aa2LX_1j6Kc
In this archive video we tested the Yokohama S-Drive Tires and compared them to all-season touring tires on our E30 M3.
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2016 ND Mazda MX-5 Test Day at The FIRM

Posted by Miles Wilson Sept. 18, 2017, 4:02 p.m.
https://www.youtube.com/embed/bdF_ayR7Dmg
We took a 2016 Mazda MX-5 out for a shakedown run at our local test track, The FIRM.
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Project Rotary Miata First Start

Posted by Miles Wilson Sept. 18, 2017, 3:14 p.m.
https://www.youtube.com/embed/WDgzWmaodLo
Take an insider’s look at the glorious moment we got our project rotary-powered Miata started after a 13B engine swap. For more information on this inspirational project, which helped one of our readers who passed away send his daughter to college, check it out in our Completed Projects section.
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yupididit
Sept. 18, 2017 5:05 p.m.

Wasn't this sold on BAT? 

I want a 13b miata, na of course. 

Miles Wilson
Miles Wilson Marketing Assistant
Sept. 19, 2017 2:23 p.m.

In reply to yupididit :

It was! IMSA driver Jeff Mosing picked it up on BaT.

After seeing one in action, I do too... It makes missing my old NB even easier, but you're right there is just something right about a 13B in NA body lines.

yupididit
Sept. 19, 2017 5:20 p.m.

I meant naturally aspirated 13b, sorry! But, I agree with everything you said. 

I have a nb that's engineless but I'm not up for 13b swap just yet lol. 

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Wild Autocross Ride in a Locost

Posted by Ed Higginbotham Sept. 18, 2017, 1:51 p.m.
https://www.youtube.com/embed/O6WVWcVFS7A
Remember that home-brew Locost we featured in a video a few months ago? We thought you’d enjoy an onboard video of it in action. This car was built by Paul Wright and is based around a Honda S2000 drivetrain.
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Stefan
Stefan MegaDork
Sept. 18, 2017 2:02 p.m.

surprise

Matt B
Matt B UltraDork
Sept. 18, 2017 2:13 p.m.

First thing I thought was, "I wish we had a lot that big..."

Then, surprise

ckosacranoid
Sept. 18, 2017 2:52 p.m.

HOLY CRAP!!!!! That was very almost sideways the whole way it seems. Very cool to watch and that must have been a hand full to drive for sure.

Kreb
Kreb UltraDork
Sept. 18, 2017 4:22 p.m.

I just flogged a very comparable car (Duratech-powered Locost - 200WHP, 1400 lbs.) over 500 miles of backroads.  The thing that doesn't get spoken about a lot is how predictable a well-set-up Locost is. I call them "heromakers" because they allow you to push them very hard without  nasty surprises in store when you screw up. The caveat is that the live-rear-axle ones lose some of this predictability on rough pavement. 

Bobzilla
Bobzilla MegaDork
Sept. 18, 2017 4:33 p.m.

where does this take place? Can I live there?

 

Trackmouse
Trackmouse SuperDork
Sept. 18, 2017 5:57 p.m.

Füwarking amazing. I love that he is able to use throttle to steer. 

Tom1200
Tom1200 HalfDork
Sept. 18, 2017 7:37 p.m.

X2 on the chuck-ability of Lotus 7 / Locosts; I've driven a friend's Exocet on several occasions both on road courses and autocross courses and you can really hang them out.

The funny thing is I looked at the video and thought it doesn't look particularly sideways to me. Sure there's bits of opposite lock but seems normal to me.

Keith Tanner
Keith Tanner MegaDork
Sept. 18, 2017 7:41 p.m.
Kreb said:

I just flogged a very comparable car (Duratech-powered Locost - 200WHP, 1400 lbs.) over 500 miles of backroads.  The thing that doesn't get spoken about a lot is how predictable a well-set-up Locost is. I call them "heromakers" because they allow you to push them very hard without  nasty surprises in store when you screw up. The caveat is that the live-rear-axle ones lose some of this predictability on rough pavement. 

I think the secret is the proximity of your posterior to the rear axle. Loads of communication about just exactly what is going on back there. Exocets are good at this, Sevens are better.

wlkelley3
wlkelley3 UltraDork
Sept. 18, 2017 7:58 p.m.

That got my adrenaline pumping!!!

 

 

I think I need a smoke now.

dculberson
dculberson PowerDork
Sept. 18, 2017 8:03 p.m.

That is much better with sound for sure!!

TheRX7Project
TheRX7Project New Reader
Sept. 18, 2017 8:17 p.m.

Holy Christ that looked like fun

stroker
stroker UltraDork
Sept. 18, 2017 8:17 p.m.

I've said it before.  I'll never ever be able to autocross.  I would never remember where to go or figure out quickly enough which cones to go through/right/left....

Toyman01
Toyman01 MegaDork
Sept. 18, 2017 8:25 p.m.

That looked like a bucket full of fun. 

My first thought was, "Damn he heated up those rears on the launch."

My second thought was, "He should have heated them a little more."

 

 

mazdeuce
mazdeuce MegaDork
Sept. 18, 2017 8:25 p.m.
stroker said:

I've said it before.  I'll never ever be able to autocross.  I would never remember where to go or figure out quickly enough which cones to go through/right/left....

If I can teach a 15 year old girl to autocross, I gaurantee I could teach you the basics. You learn a LOT with 2-3 walks around the course and a good map.

That car looks insanely fun. I need a higher level of automotive violence in my life. 

kb58
kb58 Dork
Sept. 19, 2017 2:18 p.m.
stroker said:

I've said it before.  I'll never ever be able to autocross.  I would never remember where to go or figure out quickly enough which cones to go through/right/left....

To be fair, if you were driving it wouldn't be nearly as bad. All sport-cams use really wide-angle lenses which make everything look *really* far away. He looks 3-ft away from the camera, the engine about 12-ft away, and the cones, miles away. It's all an illusion.

wvumtnbkr
wvumtnbkr UltraDork
Sept. 19, 2017 2:42 p.m.

That is the MOST wide open autocross I have ever seen.

Are other areas like this?  There wasn't any tight turns at all.

 

Looked like fun!

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Pink Panther Sighting

Posted by Ed Higginbotham Sept. 13, 2017, 1:53 p.m.
https://www.youtube.com/embed/lsS_0Ho55Zc
We spotted this crazy widebody MG at the 2017 Tire Rack SCCA Solo Nationals. Want to learn more about this build? [Check out its build thread.](https://grassrootsmotorsports.com/forum/build-projects-and-project-cars/scca-emod-mgb-gt-v12-build/26822/page1/)
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Appleseed
Appleseed MegaDork
Sept. 13, 2017 3:50 p.m.

This thread does not involve a pink Mopar.

WildScotsRacing
Sept. 13, 2017 3:53 p.m.

I was expecting a rodded modded P71.

Keith Tanner
Keith Tanner MegaDork
Sept. 13, 2017 4:23 p.m.

To me, a Pink Panther is a desert SAS Land Rover.

 

stanger_missle
Sept. 13, 2017 7:34 p.m.

I was expecting a Town Car or Crown Vic/Grand Marquis in Mary Kay pink cheeky

mndsm
mndsm MegaDork
Sept. 13, 2017 7:44 p.m.

I was expecting inspector closeau.  

mazdeuce
mazdeuce MegaDork
Sept. 13, 2017 7:46 p.m.

Still such an amazing thread showing the descent into madness that is a mod car. It should be required reading for anyone who thinks they want to build one. 

loosecannon
Sept. 13, 2017 8:14 p.m.

Descent into madness, that describes it perfectly

Chris_V
Chris_V UberDork
Sept. 14, 2017 7:58 a.m.

And I was expecting this:

T.J.
T.J. MegaDork
Sept. 14, 2017 2:18 p.m.

I was thinking a pink bugeye sprite, but that MG is wickedly cool.

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Is a Free AMC Pacer a Good Thing?

Posted by Ed Higginbotham Aug. 31, 2017, 2:39 p.m.
https://www.youtube.com/embed/YGgS0DtAWVc
How many other media companies not only have AMC Pacer owners on staff, but are willing to boast about them? Thanks to Racer Walsh Co. for this, uh, generous donation.
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SVreX
SVreX MegaDork
Aug. 31, 2017 2:45 p.m.

It can't be a worse thing than my free Europa!

Ed Higginbotham
Ed Higginbotham Associate Editor
Aug. 31, 2017 3:19 p.m.

Solid point.

Joe Gearin
Joe Gearin Associate Publisher
Aug. 31, 2017 3:19 p.m.

Funny--- I just posted a link to this on the Pacer thread in Off Topic.

noddaz
noddaz SuperDork
Aug. 31, 2017 3:58 p.m.

It would make a unique race car.

JoeTR6
JoeTR6 HalfDork
Aug. 31, 2017 3:58 p.m.
SVreX wrote: It can't be a worse thing than my free Europa!

Oh, I don't know. A working Europa would be sweet even after it broke my heart. The Pacer certainly has character (like a crazy uncle).

Keith Tanner
Keith Tanner MegaDork
Aug. 31, 2017 4:54 p.m.
noddaz wrote: It would make a unique race car.

Uncommon, but definitely not unique.

SVreX
SVreX MegaDork
Aug. 31, 2017 5:09 p.m.
JoeTR6 wrote:
SVreX wrote: It can't be a worse thing than my free Europa!

Oh, I don't know. A working Europa would be sweet even after it broke my heart. The Pacer certainly has character (like a crazy uncle).

It was a reference to a very specific Europa that has been passed around GRM for free.

I own it now. It's not working (though few a Europas are). Trust me, I'd be on the winning side if I traded it for a Pacer.

Woody
Woody MegaDork
Aug. 31, 2017 5:29 p.m.

In reply to SVreX:

Is that Europa an S2 or Twin Cam?

SVreX
SVreX MegaDork
Aug. 31, 2017 5:32 p.m.

In reply to Woody:

It's an S2, but hasn't had a drivetrain for years.

mndsm
mndsm MegaDork
Aug. 31, 2017 5:38 p.m.

It's not a free boat, either. Carry on.

mad_machine
mad_machine MegaDork
Aug. 31, 2017 7:14 p.m.
mndsm wrote: It's not a free boat, either. Carry on.

No such thing as a Free Boat.

As much as I do not mind the Pacer, I think if I wanted to build a funky race car, It would be around the Gremlin

mazdeuce
mazdeuce MegaDork
Aug. 31, 2017 7:19 p.m.
SVreX wrote: In reply to Woody: It's an S2, but hasn't had a drivetrain for years.

You know I want the Europa right? Not right now, but once it's truly broken your soul.

SVreX
SVreX MegaDork
Aug. 31, 2017 7:25 p.m.

In reply to mazdeuce:

Get in line. It's a pretty long one.

Pete Gossett
Pete Gossett MegaDork
Sept. 1, 2017 1:35 a.m.

In reply to SVreX:

I've realized that Europa ownership is the automotive equivalent of dating a stripper: they only look good from certain angles, and everyone is well aware of there inherent problems - yet there are plenty of guys lined up hoping to get a chance with one.

SVreX
SVreX MegaDork
Sept. 1, 2017 6:14 a.m.

In reply to Pete Gossett:

Yep. But this stripper is mine- you can't have her.

pres589
pres589 PowerDork
Sept. 1, 2017 7:57 a.m.

Seems like it could be a fun eco-mod project. Trying to clean up the aero a bit shouldn't be too hard. An engine swap to something less anvil-esque could be good, maybe a late Ranger 2.5 with any 2WD transmission behind it?

Homework
Homework New Reader
Sept. 1, 2017 8:17 a.m.

When was the last time the GRM staff fielded a Challenge entry?

Joe Gearin
Joe Gearin Associate Publisher
Sept. 1, 2017 10:15 a.m.
Homework wrote: When was the last time the GRM staff fielded a Challenge entry?

I think it's been since the $1500 Challenge. Running and building a car, while also organizing and running the event became a bit much to deal with. We're not saying it will never happen again......but it's been a while.

Besides---we've been completely entertained by what you guys bring!

SVreX
SVreX MegaDork
Sept. 1, 2017 11:25 a.m.

Changing the glass to lexan should drop the car weight by 500 lbs or so, and lower the CofG by 50%

mad_machine
mad_machine MegaDork
Sept. 1, 2017 11:51 a.m.
SVreX wrote: Changing the glass to lexan should drop the car weight by 500 lbs or so, and lower the CofG by 50%

There is a lot of excess metal in that car. Did you notice that the sparetyre cover was steel?

Joe Gearin
Joe Gearin Associate Publisher
Sept. 1, 2017 12:01 p.m.

Pacers were not light cars. The standard car was around 3000 lbs. While a loaded wagon could top 3400 lbs.

Lots of glass, lots of metal, lots of weirdness......and everyone knows that weirdness is heavy!

NOHOME
NOHOME UltimaDork
Sept. 1, 2017 12:54 p.m.

Pacer was on the shortlist of body donors back when I was noodling what turned out to be the Molvo project.

Had I started with the Pacer, I would have gone with a Mustang or 3 series BMW for the donor chassis; that way I could have avoided an engine swap and a wheelbase alteration.

I have always appreciated the "Out of the box" styling risk that they took with the Pacer. Funny how Porsche tried to do something similar with the 928.

hhaase
hhaase HalfDork
Sept. 1, 2017 7:56 p.m.
pres589 wrote: Seems like it could be a fun eco-mod project. Trying to clean up the aero a bit shouldn't be too hard. An engine swap to something less anvil-esque could be good, maybe a late Ranger 2.5 with any 2WD transmission behind it?

Easier options than going Ford if the car has a 2.5 I4 in it. AMC didn't want to retool their bellhousings, so they used the GM bolt pattern on their own 2.5 design. Not sure if it changed bolt patterns later in life or not, but they kept building that engine till 2002 in multiport form in both Wrangers and Durangos. And there were 2wd Durangos right up till 2002.

Otherwise, if it's a 258, there's a LOT of easy performance options for that engine.

And, not sure if it's as easy as the Spirit/Concord/Gremlin package, but the AMC V8's may be an easy fit as well. Mmmmmmm 401.

-Hans

mad_machine
mad_machine MegaDork
Sept. 1, 2017 11:03 p.m.

interesting idea, considering Jeep was part of AMC, AMC was bought by Chrysler, and now absorbed into FCA, what lightweight, powerful, and small (size wise) engine could we stuff under that hood and still keep it "in the family"

pres589
pres589 PowerDork
Sept. 2, 2017 2:06 a.m.

Why use the AMC 2.5 when the bellhousing is still wrong? Doesn't seem any more bolt in and the AMC would weigh more.

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John Morton Steps Back Behind the Wheel of a BRE Datsun

Posted by Ed Higginbotham Aug. 30, 2017, 1:53 p.m.
https://www.youtube.com/embed/i0HGnFtqimc
While we were in Monterey for car week, John Morton stepped back behind the wheel of one of the BRE Datsun 240Zs that he drove to victory decades ago. Turn that volume up!
Show comments
crankwalk
Aug. 30, 2017 2:09 p.m.

Loved seeing/hearing it.

David S. Wallens
David S. Wallens Editorial Director
Aug. 30, 2017 4:16 p.m.

Yeah, cool video.

OldGray320i
Aug. 30, 2017 8:12 p.m.

Sounds of Datsun 6 > BMW 6...

Love the BRE stuff, one of the best livery's ever.

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2018 Lexus LC500h Review and Technical Analysis

Posted by Ed Higginbotham Aug. 28, 2017, 2:44 p.m.
https://www.youtube.com/embed/2pNjjkVBNiY
The Lexus LC500h is hardly Grassroots, but we don’t often get a chance to throw a $100,000 car on the lift and take a closer look. Here’s our review and discussion.
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V8 Exocet Flyby

Posted by Ed Higginbotham Aug. 8, 2017, 3:31 p.m.
https://www.youtube.com/embed/E-bwhazWMBQ
Shawn Setherly is lapping VIRginia International Raceway in his Fiat 500 during our Tire Rack Ultimate Track Car Challenge when a V8 Exomotive Exocet roars by.
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Keith Tanner
Keith Tanner MegaDork
Aug. 8, 2017 3:34 p.m.

The music I'm listening to has a big sigh noise that happened right about 0:16 in that video. It was beautifully timed.

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Using All the Track at VIR

Posted by Ed Higginbotham Aug. 7, 2017, 4:01 p.m.
https://www.youtube.com/embed/kwy7YZ5EYSs
Curbs on race tracks can be bumpy. Ride onboard with Josh Vieira from Track Monkey Apparel as he races around Virginia International Raceway (VIR) in his 1987 Porsche 944 during our 2017 Tire Rack Ultimate Track Car Challenge. [Learn more about the Tire Rack UTCC here](http://www.ultimatetrackcar.com/)
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kevlarcorolla
Aug. 7, 2017 5:22 p.m.

Is that shifter just sitting in a bowl of jello under the car?

I avoid all curbs with my torsen diff'd track miata,they don't like curbs much.

Stefan
Stefan MegaDork
Aug. 7, 2017 5:49 p.m.

In reply to kevlarcorolla:

The 944's shifter base is mounted to the top of the torque tube, the linkage runs to the transaxle in the rear and the torque tube connects the engine to the transaxle.

The shifter is known to wear out due to the vibrations and the transaxle mounts aren't terribly strong and motor mounts can fail and not be easily noticed.

I suspect a refreshed linkage and shifter with a poly-filled transaxle mount and new engine mounts would go a long way to reducing that effect.

Vigo
Vigo UltimaDork
Aug. 7, 2017 6:43 p.m.
I avoid all curbs with my torsen diff'd track miata,they don't like curbs much.

Can you describe what happens? I can vaguely imagine that it would cause a noticable symptom but i can't really figure what it is..

kevlarcorolla
Aug. 7, 2017 6:47 p.m.

In reply to Vigo:

Diff go boom....

GameboyRMH
GameboyRMH MegaDork
Aug. 7, 2017 8:33 p.m.

Looks like he hit many crub but no fents, burshes or bricks

With 650lb/in springs and sketchy Taiwanese shock valving, I generally keep off the curbs...

Robbie
Robbie UberDork
Aug. 8, 2017 7:30 a.m.

There was a hole at a track in Colorado I used to go to (Pueblo) where there was no curb. Apex point was dirt. That dirt wore away into a hole.

If you did it right, you could hook the inside of your tires on the edge of the track surface and gain a few mph corner speed. Really unnerving though, and if you were depending on it and missed you would be off.

And I gotta believe it was hard on the car.

kevlarcorolla
Aug. 8, 2017 6:37 p.m.

In reply to Robbie:

We do the same at our ice races,its a flooded track(every week) and the non studded guys will scrub the inside bank until they uncover the raised edge of the ice under the bank.

And yes if you do it just right it works great,do it wrong and lots of bad things can happen....or you break balljoints/tie rod ends and bad things happen even if you hook it just right so ya takes yer chances.

Vigo
Vigo UltimaDork
Aug. 8, 2017 10:59 p.m.

In reply to kevlarcorolla:

Im trying not to make any correlations between your last post and the one previous about a blown up part.

Thanks for the reply btw. I'm still turning it over in my head..

Tom1200
Tom1200 HalfDork
Aug. 8, 2017 11:28 p.m.

I actually started laughing because in the first part of the video I was trying to figure out why he was being so dainty with the curbing. I pound the curbs mercilessly but I've got built suspension and a touring car driver brain.

Tom

dean1484
dean1484 MegaDork
Aug. 9, 2017 1:01 p.m.

I like my ball joints and suspension components to remain. It would b interesting to see if keeping it off the curbs and smooth is faster. Unless there is money to be had at the end I tend to think more of car preservation. I think this comes from my endurance racing background.

GameboyRMH
GameboyRMH MegaDork
Aug. 9, 2017 1:06 p.m.
Robbie wrote: There was a hole at a track in Colorado I used to go to (Pueblo) where there was no curb. Apex point was dirt. That dirt wore away into a hole. If you did it right, you could hook the inside of your tires on the edge of the track surface and gain a few mph corner speed. Really unnerving though, and if you were depending on it and missed you would be off. And I gotta believe it was hard on the car.

In stage rally they call that curb/gutter/ditch hooking, and it is bad for just about everything in the suspension. Also seen on Initial D!

Huckleberry
Huckleberry MegaDork
Aug. 9, 2017 1:22 p.m.
Robbie wrote: There was a hole at a track in Colorado I used to go to (Pueblo) where there was no curb. Apex point was dirt. That dirt wore away into a hole. If you did it right, you could hook the inside of your tires on the edge of the track surface and gain a few mph corner speed. Really unnerving though, and if you were depending on it and missed you would be off. And I gotta believe it was hard on the car.

The turn 3/4 combo at NJMP is like that - and when sprint racing there it's a couple 10ths worth of time. If you do it just right and gently place the tire against the inside lip it's not that hard on the car but if you come slamming into it you can bend things pretty easily. We had a for-pay driver in our enduro car ruin a wheel and unseat the tire being hamfisted with it.

If you it during an open track day though, they black flag you and yell because they don't much care for racers coming in and scaring the other drivers or throwing sand all over the track to eek out a few extra 10ths. So, you can only practice the timing in race practice. Spoilsports, the lot of them

kb58
kb58 Dork
Aug. 9, 2017 1:33 p.m.
Robbie wrote: There was a hole at a track in Colorado I used to go to (Pueblo) where there was no curb. Apex point was dirt. That dirt wore away into a hole. If you did it right, you could hook the inside of your tires on the edge of the track surface and gain a few mph corner speed. Really unnerving though, and if you were depending on it and missed you would be off. And I gotta believe it was hard on the car.

There was a chunk of asphalt missing from the apex in Turn 9 at Willow Springs - a scary decreasing-radius turn taken at high speed. If you hit it just right and had the car loaded up, you wouldn't feel a thing because the tire flew right over the top of the missing section. I can only conclude that you guys just drive slow

kevlarcorolla
Aug. 9, 2017 6:17 p.m.
Vigo wrote: In reply to kevlarcorolla: Im trying not to make any correlations between your last post and the one previous about a blown up part. Thanks for the reply btw. I'm still turning it over in my head..

Comparing a borked ball joint on a rusty old ice racer to the need to find another $800 torsen diff for the miata is apples to oranges.

The torsen diffs will spin the inside rear under power like an open diff after popping a curb,when it touches down it can 'splode.

I popped a curb at mosport yrs ago with my turbo AE86 and showed many people the complete underside of the car...never came closer to rolling without actually rolling.

So now I'm a little more reserved with curb useage.

GameboyRMH
GameboyRMH MegaDork
Aug. 9, 2017 6:37 p.m.
kevlarcorolla wrote: I popped a curb at mosport yrs ago with my turbo AE86 and showed many people the complete underside of the car...never came closer to rolling without actually rolling. So now I'm a little more reserved with curb useage.

Ken Block popped a curb on my local track and DID flip, and that was in a GRC car!

https://www.youtube.com/embed/e2Z6vS_fMc0

(Although to be fair, this track has huge Zolder-style curbs)

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