Project : X-BOMB

Will getting caught up in real time not open up a rift in the space time continuum creating a massive singularity whereby a Biturbo appears at the Challenge and wins outright first time? 

<<Shudder>>

I would love to see the Nelson magic on a Biturbo. 

I can see it now. Rip out the biturbo, insert 350, add lightness.  Best, most reliable, and fasted biturbo ever will result.

You people who have this unhealthy attraction to BiTurbos really need to get some help.

Day 90 - November 8, 2017

Welded in cap plate on frame. Ground out and rewelded several factory welds. Made closeout plate for motor mount. Started to grind off rust for paint.

If you guys didn't have to worry about budget, would you tube the crossmember and front frame instead of keeping the factory metal? 

In reply to mazdeuce - Seth :

Yes. It would probably look something similar to this.

Day 91 - November 16, 2017

Worked on firewall.

Didn't have time to update until just now. Sorry guys.

Day 92 - November 20, 2017

More welding, grinding, fabbing, sanding, prepping...prime and painted the front end. And a parts run to Sahd's.

Holy crap, I'm jealous of your scrap pile. LOL

Day 93 - November 21, 2017

Cleaned and lightened A-arms.

all caught up, incredible build

In reply to solfly :

Thanks!

Was there any testing done on the stiffness before/after on those control arms? I'm not sure that weight was entirely useless.

Im interested as well. Seems like it would be a weight/stifness ratio that y'al followed. 

But it definitely gives me ideas.

tuna55 said:

Was there any testing done on the stiffness before/after on those control arms? I'm not sure that weight was entirely useless.

eh, they wont have any load on them when they are 4 inches off the ground..... 

wvumtnbkr said:

tuna55 said:

Was there any testing done on the stiffness before/after on those control arms? I'm not sure that weight was entirely useless.

eh, they wont have any load on them when they are 4 inches off the ground..... 

I like the way you think.

In reply to tuna55 :

In general we try to remove 10% of the mass from any piece we touch. The curb weight on these cars is around 3200 pounds. We hope to be around 2600 pounds with driver. There has also been an 8.75 inch engine setback taking even more weight off of the front end.

tuna55 said:

Was there any testing done on the stiffness before/after on those control arms? I'm not sure that weight was entirely useless.

No tests needed.  Just fundamental engineering principles applied.  

I used to see this all the time on the pro-stock circle track cars. 

A couple gussets per side and they're actually stiffer.

No dimple die for those holes? Seems it would add stiffness back, buy that's just assuming..

bluej said:

No dimple die for those holes? Seems it would add stiffness back, buy that's just assuming..

Free body diagram.  Assume spring is in center laterally (it's not), assume the spring is concentrated over one side of the a-arm,  assume 700# wheel weight (it's not), assume we over tightened the bolts (we didn't), assume 2G load from bumper dragging wheel stand and driver panics, 240#/in spring and high damping rate. Thoughts?

Assume I've got a BFA and not a BS 

But hey!, logic:

Since you've dimpled elsewhere, I figured you decided you didn't need to here, but was curious the reasoning since I wasn't sure how it could hurt.

bluej said:

Assume I've got a BFA and not a BS 

 

But hey!, logic:

Since you've dimpled elsewhere, I figured you decided you didn't need to here, but was curious the reasoning since I wasn't sure how it could hurt.

It would negatively effect the tension line on the lower part of the vertical stiffener.... and if it would be a benefit.... the die won't fit. 

FWIW, the force would have to exceed 4,710# tension to reach SMYS. 

Day 94 - November 22, 2017

Drilled new holes for upper a arm mounts. Cleaned and painted steering components.