My 88 Fiero GT 14k miles (Page 178/194)
BV MotorSports JAN 26, 09:54 PM
Drove the 88 for the first time in nearly 5 months. Went fairly well. 1 small oil leak at the oil pressure sensor. It was finger tight. Ooops! p0134 & P0717 codes. Forgot to plug in the 2nd o2 sensor. Not sure about the 0717 speed sensor code as the speedo works. So thats a new one. Its really rich and stumbles at 3500rpm like it did when I first got it. DH and I are gonna do another tune after I do a nut & bolt check and get it aligned again. Definetly can tell its not right after replacing all the bushings. Clutch... still isnt right. I had to space the MC away from the firewall to keep it from rattling when running with the clutch in. Its a band-aid but I am gonna drive it for a few weeks to try and and enjoy it again before ripping it back apart. OH yeah, and the Tial BOV is staying open at idle. So I got to get a stiffer spring for that as well.







[This message has been edited by BV MotorSports (edited 01-26-2014).]

darkhorizon JAN 27, 08:44 AM
If the tune seems different something mechanically is different. It would be unwise to try to fix (or unfix)a problem by just tuning around it.
BV MotorSports JAN 27, 04:48 PM
For sure Scott. I am poking around and checking things out. The o2 prob had a lot to do about it like we spoke about on the phone. I cant think of anything that physically changed that would effect the tune. But then, stranger things have happend. if you remember, this is the same problem I had when I fist got it. The 3,500 rpm stumble.
Justinbart JAN 27, 05:45 PM
What gear does the PCM think it's in?

------------------
Turbo 3800 E85 F23 5spd spec5
10.91@133.1

BV MotorSports JAN 31, 05:02 PM
Fixed a few more little stupid problems. I don't want to say what they were, but they were totally on me. Car runs MUCH better. I still have more valvetrain noise than I think it should have. I am gonna check the pushrod length just to be sure. Got a package for a few more little things that need to be sorted today. Mostly ebrake related. I may even make Daytona this year... MAYBE.
darkhorizon FEB 01, 01:24 PM

quote
I don't want to say what they were, but they were totally on me.



Try to put a bit more care into checking your vital signs before seeing how well it runs at full boost. The margin for error on big horsepower non factory setups like this is still fairly large, but you do not have nearly the failsafes you would in a 100% factory configuration.
BV MotorSports FEB 01, 08:51 PM
Absolutely. I am not going to even start it again till I can verify the pushrod length.
darkhorizon FEB 02, 12:06 AM

quote
Originally posted by BV MotorSports:

Absolutely. I am not going to even start it again till I can verify the pushrod length.



what are you expecting? Stock pushrods will be fine for stock rockers...
BV MotorSports FEB 03, 07:47 PM
I spoke with Steve @ ZZP the other day. We were going over the order Whodumbass made for parts. There was no record of what lifters Dean used with the ST1 (yep, its an ST1 not ST2) cam. He said if I have stock lifters I should be OK. If dean used COMP's there could be a problem with the lash difference. Apparently COMP uses a smaller base circle. The valvetrain is too noisy IMO. So I would rather buy a $15 PR length checker and know for sure. Stock PR, unknown lifters, ST1 cam, milled heads? Stock rockers, ZZP retainers, LS7 "yellow" springs etc. Much mix and match going on.

Hand on heart, I have never had a car so problematic in my life. I'll never farm out work again.
darkhorizon FEB 04, 12:17 PM

quote
Originally posted by BV MotorSports:

I spoke with Steve @ ZZP the other day. We were going over the order Whodumbass made for parts. There was no record of what lifters Dean used with the ST1 (yep, its an ST1 not ST2) cam. He said if I have stock lifters I should be OK. If dean used COMP's there could be a problem with the lash difference. Apparently COMP uses a smaller base circle. The valvetrain is too noisy IMO. So I would rather buy a $15 PR length checker and know for sure. Stock PR, unknown lifters, ST1 cam, milled heads? Stock rockers, ZZP retainers, LS7 "yellow" springs etc. Much mix and match going on.

Hand on heart, I have never had a car so problematic in my life. I'll never farm out work again.



Even if you have an OER lifter... You are not going to run into any sigificant problems. The OE non R lifters are ticky and noisy just because thats how it goes... You may also have an exhaust leak tick.

Even if you check lengths on things... You are not going to get any consistant readings across all 12 lifters enough to do any more than suggest a better pushrod length.

thirdly... with everything stock, you are probably looking at a possibly slightly too long pushrod, with a comp lifter you are looking at a possibly slightly too short pushrod... so the variance is going to equal out somewhere in the middle of slightly long or slightly short.... which is a good thing.