Rock-a-bye Sugar - Page 193 - The Speedfoos' Turbo Thread!!
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Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
I had a though. Maybe the map sensor port is leaking by. Check the port to make sure its not scratched or the o ring is pinched. Also if they didnt mask that port off when it was powder coated that may have an effect on the seal. The hole size is very tempermental. I'd be willing to bet its something like that. Its not likely that it fractured anywhere and even if it did it would be super obvious. The design is pretty solid as far as structure so I can't imagine it breaking like that.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
If you have it off, check the welds to the head flange. Look real close for hairline cracks, maybe the powdercoating is masking a fracture. Of all the places, that would be the most prone to breakage.
Last edited by 02fpcivic : 08-04-2008 at 09:18 PM.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
That was one of the things I was thinking, Gery. I thought there may've been a map leak issue. My first thought was a crack at the runners but like you said, it should've been obvious.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Yeah Andy. The runners are .130" thick so there is plenty of meat there for strength. Virtually nobody braces runners that thick. The only reason we had problems with yours was due to the fact that they were .050 annealed hand spun runners, a lot more fragile than 6061-t6.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Quote:
Originally Posted by 02fpcivic
I had a though. Maybe the map sensor port is leaking by. Check the port to make sure its not scratched or the o ring is pinched. Also if they didnt mask that port off when it was powder coated that may have an effect on the seal. The hole size is very tempermental. I'd be willing to bet its something like that. Its not likely that it fractured anywhere and even if it did it would be super obvious. The design is pretty solid as far as structure so I can't imagine it breaking like that.
Quote:
Originally Posted by 02fpcivic
If you have it off, check the welds to the head flange. Look real close for hairline cracks, maybe the powdercoating is masking a fracture. Of all the places, that would be the most prone to breakage.
I thought it might be that at first too Gerry so I made sure there was no PC on the map plate and when it still gave me issues, I sealed the MAP sensor in there (not on the o-ring nipple, but around the base) with RTV - still no change.
Like I said, I pull the PC off tonight after work and and see what's what.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Ok, well I just emailed ya my shipping adress. If you RTV-ed the MAP that should have definetely sealed it. As long as the injectors were sealing it sounds like you checked everything else it could be.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Thought about that Andy, but it would still give me the same issue on the stock IM if it was the IACV (since it's on the TB), but it's not. Same thing is true on the injectors since I'm using the same injector plate, ditto for all the little blue o-rings on the runners and the biggun on the TB. I've troubleshot until I'm shooting blanks, so it's gotta be somewhere in the IM.
Once I get it to you Gerry, no hurry on it. I'm shipping my car back to the states during the week of 20 August and it will take about 45 days to get there.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Well I do want to get to the bottom of it and if its a bracing issue I want to make sure steve's gets taken care of promptly too. You'll definetely have it in reasonable time.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
man gerry you are such a top notch guy.. i'm so glad that i'm going to order one from you when i get ready for it.... oh yea i already know that you are just felt like i needed to put that out there!!!
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Gerry, looks like the IM is fine, but I fucking quit. Was on the way to get my emissions re-inspected, car felt a littl funny after a couple miles. So I turn around, get home, and my idle is back to this again.
Was hearing an odd tapping in the head under any acceleration so i figure it has to be the valves from when that tensioner let loose. My new head better get here fucking soon. I'm guessing the exhaust valves on #3 or #4 are slightly bent because that's where the tapping sound comes from and that blowback would cause the fuel/air mixture to get contaminated on the compression stroke, causing my idle issues. She behaves fine under acceleration and load, it's just the idle.
Last edited by speedfoos : 08-07-2008 at 10:52 AM.
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
leak down test Clint.....check that before you pull the head again. She'll hiss at ya through the intake or exhaust, depending on what is bent. Aren't cars fun! Just take the radiator cap off, drive another car under it, install, & bam! Problem fixed
Re: Leaking IM, But Rear Discs Installed (Page 177)! - The Speedfoos' Turbo Thread!!
Yeah no kidding Avery. I'm swapping the head as soon as it gets here, I don't like the port job on this one anyway. Plus my buddy with his leakdown tester is deployed. The head better get here soon because all my shit get's packed out on 18 August. Just pisses me off is all.
