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I've mounted 255's on a 7.5" rim too...not too terrible. If I were you and the rims were in good condition, I'd snatch them up. EDIT: sorry, they were 245's, not 255's. My bad.

Exactly right there. If you run with a cat in your exhaust system and stock intercooler, you shouldn't have a problem with even getting to fuel cut point really with anything 57-trim or smaller. If you start trying to turn up the boost with a boost controller and want more than 10-11psi...

So are you saying it's cranking but slowly or it's not cranking but you're hearing the starter "whirring"? If it's the first, your battery is probably weak, if it's the second, the gear in your starter isn't popping out properly. Get your battery load tested to see if it's for sure good, and...

Never said I needed to get a new battery. The battery is <6 months old and tests @ 800cca and 12.6V is a good sign for a healthy battery. The starter is pretty much brand new as well. And yes, the problem existed with the old starter (even after replacing contacts). Next step I'm going to...

Quick question, how much resistance is too much resistance between grounds? I've ruled out my battery terminal connections, but while I was testing resistance between different grounding points, I noticed that inside the fuse box (pulled AM2 fuse) I got 20(ish) ohms. between the battery and...

My starting problem is localized to the starting system (starter not turning at all), so one of the things I did in diag last night was pulling the AM2 fuse and jumpering acorss the posts, so unfortunately it's not going to be that easy for me.

Well after playing with it a bit last night it looks like I've lost all ability to start. I'll be taking the multimeter out next instead of the test light...need to get a battery for it first though >_<

Yeah, I never got that far and now that I look at the problem again, it is true that it's a mickey mouse solution to the problem. At this point I'm at a bit of a loss as to where to go though. I know that the clutch switch is working correctly, because I can get the Toyota starter relay to...

EDIT: I've left the first posts unedited so you can see where I started, and now where I'm going. After doing some more reading and thinking, I've decided to try and track down the real problem rather than do the relay mod which is essentially a band aid patch fix. For reference...the mod...

A VERY cheap and relatively easy thing to do is to get two of the Comp Cam 975-12 boxes of valve springs and stick those in in place of the stock springs. Higher seat pressure for about $60, plus you get nice new springs to replace 150,000+km springs. They are a tight fit, but it works :)...

Any visual leaks? Are you losing fluid at all? If the system can't build pressure or is losing it, the pedal will feel really soft.

Yeah, I had to cut out about an extra 3/4" diameter in the center hole. It wasn't just felpro though, I asked for a generic gasket to compare at the local car parts store and Napa and saw the same gaskets. Here's a small pic of the type that's included in the felpro kit: As you can see...

I just finished my entire top end build with felpro gaskets and so far no problems. Driven 1000km on them over the last month and a bit. No leaks (that were the gasket's fault at least). I did have to modify the throttle body gasket included in the kit because the opening was WAY to small...

Not true, in fact completely the opposite. You redo the engine properly and you'll have fewer problems with it in the future. That would be the whole point of rebuilding. I would be going back to the mechanic personally. The book time on a head gasket replacement on a turbo Mk3 Supra is...

Wiring diagram for the starting system: http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=038 Seeing as what you are tapping in to only has a 40A fuse at the beginning of the loop, a 30/40A relay would be fine. If I'm not mistaken, most starter relays aren't more than...

Take a look at these two threads: http://www.supramania.com/forums/showthread.php?t=62881 http://www.supramania.com/forums/showthread.php?t=2029 Both helped me through my head swap. I know my way around tools and bit around an engine, but I had never ripped apart an engine to that extent...

If you would have looked through even a couple threads on the front page you would have found this thread which had that link within the first page...:3d_frown: Please try and search the forum a bit more thoroughly so we don't find end up just repeating ourselves over and over and over...

I am computer tech for work, and I can tell you that there are TONS of problems with USB/Serial converters. Depending on the cable you get, it will have different emulation chips in them and every single one seems to act different. Sometimes they'll work wonderfully for one thing and then not...

DIY Boost leak tester - http://www.supramania.com/forums/showthread.php?t=19718 Hope that helps :)

My buddy had a bad clutch on his mechanical fan, would overheat very easily actually. Gave him mine to try while my car was off the road and it solved the problem. Try spinning your fan by hand after you warm everything up and see how much resistance the clutch gives you. If it spins fairly...