1988 Saab 900T SPG

Started on Aug. 16 by Broadspeed

Ride Rating

8

1988 Saab SPG modified for land speed racing. Stock engine with stage 1 cams & springs, PowerMaster turbo, custom header, external wastegate, custom intercooler, 51 lb/hr fuel injectors, high volume fuel pump, carbon/kevlar clutch disc, Moates Tuner Pro Fuel Mgmt software w/Ostrich II emulator and water injection. 350 WHP; 6,600 RPM redline. Racing driver restraints, seat and fire sys to East Coast Timing Association rules. Class record holder at the Maxton Mile. Best top end 162.2 MPH.

7 comments on this ride

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Comments

Aug 17, 2011 6:17 a.m.
Luke:
Would love to see some pics!
Aug 21, 2011 8:50 p.m.
Broadspeed:
Attached pics for the SPG
Aug 22, 2011 12:23 a.m.
Luke:
Awesome - very impressive stuff. How reliable is it?
Aug 22, 2011 10:14 a.m.
Broadspeed:
Pretty good. Bought the Saab off a lease in Jan 2000 with 72,000 miles. Started land speed racing in the Sep. 2008 with 200,000 miles. Rebuilt the engine first size overbore. Pistons, rods, and crank are stock. No engine issues in 70+ runs and driven to all the events until I broke a transmission (shredded third gear) at the May event this year. Running 24 psi of boost and car was quite a handful before the traps at 158.6 MPH. Trans are the weak link. Key is fuel mixture and no drag racer style starts in land speed racing. Run on a chassis dyno to make sure air fuel ratio is in a range of 11 to 12:1 at wide open throttle at engine redline. No detonation issues with big intercooler, water injection and 110 octane gas. If I can come up with funds want to build a 7,500 RPM engine with forged pistons & ported head and target 600+HP and figure out how to beef up trans.
Apr 13, 2012 10:31 a.m.
Adrian_Thompson (Forum Supporter):
Can you do a build thread or detailed post in the main forum on this please?
Sep 18, 2013 10:19 a.m.
Jerry From LA:
If you installed Mahle stock-type oversized pistons when you rebuilt it, you already have forged pistons. They're pretty stout. I think the only way you'll beat them is a custom forging.
Oct 25, 2013 10:17 p.m.
Broadspeed:
Jerry I am using oem Mahle pistons. Last run pulled 32 psi boost at 6,300 rpm 5th gear and 166 mph in the mile. Compression down on one cylinder (100 psi). Believe broke a piston ring. That engine had 32 runs on it. Have had discussions with Mahle Motorsport and they have all the specs to make a racing forged piston. Wiseco another possibility. Looking at upgrading fuel mgmt to T5 Trionic as I can't manipulate the fuel maps on the oem LH Jetronic.

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