Exhaust and lowering

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

Ok, once the turbo is finished i have to get the exhaust done. I want to have 3" Mandrell bent, but the car isn't lowered at the moment. Just say that i cut the springs (i'm not going to, im just wanting to know how low i can go), so the car is really low, lower than with s/low kinggy's in it. Can i fit a 3" in there above the diff or will i have to go 3" from the turbo then about halfway go to 2 1/2"? Also, do i need a cat?

ATG23Q · tinkerer Joined: 10 Aug 2003 Posts: 201

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

Because the car might be too low, and 3" is pretty big.

ATG23Q · tinkerer Joined: 10 Aug 2003 Posts: 201

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

bah fuck it, i'll have a think about it, coz i can just go down to 2 1/2" after the cat or whatever, and have a 3" dump from the turbo, main thing is getting the exhaust gasses out of the turbo.

ATG23Q · tinkerer Joined: 10 Aug 2003 Posts: 201

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

Still waiting on Manifolds, then engine will be rebuilt. EFI Turbo running a T25, but i want to eventually run a GT28. Then take it down to get its exhaust, then run it in for a while, then get it lowered. Lowering doesn't really matter, sleeper all the way. Wink

ATG23Q · tinkerer Joined: 10 Aug 2003 Posts: 201

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

Until it breaks, then i'll look into diff's. I'm just not gonna be able to fully thrash it until i get a new diff, i dont know about LSD either, i dont want to kill myself.

Racegem · backyard mechanic Joined: 30 Jan 2002 Posts: 987

Sam,
Go with the LSD, you'll always know it's going to "step-out".
Take the springs right out and sit it on its bumpstops at the rear. Then see if the exhaust will clear. That way, even with new springs, if you get a load of mates in the car and it bottoms out going over bumps, you won't hit the exhaust and crush it.
With a Turbo, the bigger the better.
If the motor is still the original, you'll only have to comply with ADR/EPA regs for 1984; no cat. '86 is when unleaded came into effect and required cars to run catalytic converters, although technically, if anyone is running unleaded in their Gemini, even stock, they still should run a catalytic converter to comply.

Yonnee

Gene FJ20DET · Posted: Thu Jan 01, 2004 3:09 pm Post subject: Re: Exhaust and lowering

i have super lows with a 3.5" system. all fits well
_________________

Racegem · backyard mechanic Joined: 30 Jan 2002 Posts: 987

I've just lowered my TG work hack.
Cut 2 coils off the front, and three coils off a set of Commodore rears. So I'll let you know when they fail, causing me to lose control in the wet doing 140 clicks down Mt Dandenong Tourist Rd. half pissed and "hepped up on Goofballs". Cause I know it will be the springs fault... D'OH!!! Smile

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

Lol, hepped up on goofballs, ah the simpsons, i love em.

Yeah well thanks for that Genoss, 3" will fit then with s/lows.

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

oh, BTW Yonnee, how low did that drop it? What shockers did you fit?

Racegem · backyard mechanic Joined: 30 Jan 2002 Posts: 987

Still running stock shocker atm, it's only a work hack... but I have the latest Monroe catalogue so I'm going to find a vehicle with the same style of shocker as the Gem but shorter, then it's off to the wreckers with my spanners. If that works, I'll get new shockers in. If you're interested, I'll get you my results.