I am anxious for bill to chime here with his new number for schied's I seen the dyno sheet in his 92' as I was walking around the parking lot looking at all the nice rides . But he wasn't in his 89' so hopefully it didn't break on the dyno . Maybe he can find a computer to post on here soon. So i don't look .

 

Well it wasn't much of a gain or very impressive IMO. 450rwhp, 918rwft-lbs. Up 7hp, down 4ftlb. Only changes were a fuel system, and pulled the trimmed 3800rpm spring and put in a 3200rpm spring. It gained me ~100rpm til defuel, before it defueled at 2800rpm, now 2900rpm. Not very noticeable. I'll try to get the dyno sheet online this weekend. Well I guess with the correct spring in, it held onto higher HP a little longer, but not much of a difference. Not sure if the big pump head, gov spring, and HD plunger return springs, and other pump internals make a 14mm pump fuel differently than a normal 12mm pump does with a 3200rpm spring. We all know a plain jane 12mm pump will fuel to 3000-3200rpm before defueling with the 366 spring. Not sure what the deal is with mine. Maybe it's weak .

I didn't think maxing the pump would do me much good since I'm already hammering my SledPuller 66-14 turbo with 50psi of boost on the dyno. I still have more fuel available in the pump as now my idle is still nice and low around 700rpm. Looks like some port and valve work on the cylinder head might be in order. KTA said he gained quite a bit after some extensive cylinder head work. Also it's time for TWINS

I need more air. Don't we all lol. It poured black smoke from 1800rpm to 3400rpm at 50psi of boost on the dyno where he let off. It never cleared up. So I guess there's alot of HP potential there, not getting burned. Time to start saving my pennies for another turbo .

Oh and to answer any questions on the fuel system, it consists of an Aeromotive A1000 electric fuel pump, 3-15psi bypass boost reference regulator, 3/4" ID (-12an) bulkhead/pickup in tank, 5/8" ID (-10an) fuel line from fuel pump to regulator behind the battery on fenderwell. 1/2" ID (-8an) fuel line for the bypass back to the tank from the regulator. 3/8" ID (-6an) fuel line from regulator to inlet of injection pump. Got an air pressure regulator on the boost reference line to the fuel pressure regulator. With no regulator it will increase fuel pressure 1:1 with boost or vacuum (on gassers). Base pressure set to 14psi. At 50psi of boost we don't want 50psi + 14psi of fuel pressure going into the VE. With an air pressure regulator I set the pressure to ~15psi. On the dyno it seen ~30psi of fuel pressure. So far I'm not making oil .

I really didn't know what to expect with the fuel system. Didn't know whether it would be a HP gain or not. At least I can rest easy or hope that is, that I will have plenty of fuel (lube) for my injection pump and I won't run it dry.

Sorry for the book. I won't be around for awhile, just stopped at Mom's to check mail etc. Bill.

 

Any gain is better than a loss and it didn't break. pheww!!!

 

Great job Bill, it sounds like you have your fuel system set up right!!!!!
We need a Video,LOL!!!!!!

 

Thanks for the info, Bill!

 

Twins? Just spray it!

 

Uploaded a pic of the dyno sheet in my gallery, waiting for approval. Got a DVD of my 443hp run at IRP this year. Need to figure out how to upload it from my digicam. I recorded it from the TV, so not the best quality.

Chris, #2 only!!!

 

sounds good bill. i had a chance to get on the rollers this weekend too. darn thing ran away on me. still kickin though. i somehow was able to keep about 9psi of fuel pressure going, even with about 70psi of boost! i think i need a wastegate on the bottom turbo. got on the dyno and took two runs, 395 and 397, at basically the bare minimum pump settings. decided to crank er up a bit and see what would happen. the guy leaning in the passenger window said when he saw the look on my face as i was trying to open the door, he looked at the tach and says it was trying to bend the needle. unfortunately, the dyno was off at that point so it's only a bunch of guesses that put it at about 5000 rpm. she idles a little rough now. made it all the way back down to so. utah though, about 12 hrs driving. anyway, once the cold pipe hoses were cut while i was holding the shutdown lever, we got er shutdown. turned it down until it was idling about 150 rpms higher and went again for 420/925. hopefully i'll get a chance to get back on a dyno with some time so that i can do timing and do things slowly with the pump (like mess with the throttle shaft or something, since the idle screw can't go very far at all). anyway, congrats on the #'s and thanks for the fuel system update.

dave

oh yeah, a buddy of mine with a 93 put down 413/926 this weekend too. stock pump and my old POD's. oh yeah, and w/m.