Boost/transmission/engine Knocking Problems

[r34_boy]

sup ppls,

I've had my 96 r33 gtst for about a month and suddenly last week been hammered with a problems. Need some help from some guru's around here.

1) boost: the car came with a turbosmart twist type boost controller, took it off cause it spiked ridiculously, at low boost it sits a 6-7psi, once I drop down to second gear and give it some beans, the boost gauge shoots up to the original 10psi, but not always only when I try to redline it. Is this normal?

2) transmission: This is starting to worry me, trying to get into gears is hard, feels like the gear linkages aren’t aligned properly, sometimes I need to force the gear in. Another problem is when I change from 5 to 4, it makes a very alarming sound, like when you try to get in gear without enough clutch in, that grinding sound.

3) engine: An extremely loud knocking sound has arisen from the cam cover or around that area when I start the car and when I throttle it to 1500rpm, it is the loudest at that point, it just keeps "knocking" like something's loose or hitting something.

Any help would be great.

Cheers

Edited July 2, 2007 by r34_boy

[RANDY]

woah!

Well... this might be a band-aid solution, but Redline gearbox oil helps with crunchy gears.

The knocking *could* be your timing belt slapping against the cover.

[r34_boy]

thanks randy, Timing belt eh...I'll give that a look

You can only hear it when I start the car in the morning, and when I hold it at 1500rpm...anything above that, there's no sound...no idea.

Boost, I'm still confused and the stiff gearing, still have no idea

[RANDY]

Well... it'd be good to check the contents of your gearbox oil when you drain it. (looking for metal flakes or shards). If it's worn synchro's, it's worn synchros and you can only change them (probably quite expensive.. it's gearbox out and in, plus parts)

Timing belt i'm still betting on, but the boost lost me. Might want to take pics of your current setup and/or mention what the current setup is. I'm guessing you went back to the stock controller? If so, it gives 5psi under 4500rpm, and 7psi over that. If it's going to 10psi, then you've got some mad boost-spike problem. Either it's excessively long boost controller piping or something else strange.

Get it short, and get the turbotech (or whatever) cheap manual boost controller to test this out. I run one on 10psi, and it doesn't spike one bit!

[hayden49]

Is the sound kinda like a " DUDUDUDUDUDUUDUDUD" sound?

Mine had that about the same RPMS and it was the timing belt that needed changing.

Oh and R33 gear boxes have become notorious for being f**cked and being crunchy. learn to live with a shitty gear box unless you want to spend big $$ either for a brand new box or getting it rebuilt.

Cheers

[adrianlee]

Hey Derek! Thats my old car mang.. sorry to hear ur havin issues with it! The gear box probably could do with an oil change, and maybe clutch too dude. Try double clutching into gears and see if it still crunches, if it doesnt, its most likey syncros.

As for the engine, i got no idea what that noise is. A loose timing belt will make that noise, but i had the belts changed not long before selling the car.

If you got any other issues man, u've got my number!

A.

PS. if you ever decide to sell that car let me know first! I miss it.