Cracked STD manifold, replacing with extractors from an auto. Cars a 5SPD ?

[reeceo]

Hey Guys just doing an engine swap for a vs i just bought to do up. It has the t5 box on it. Anyways i pulled out the blown motor and found one of the manifolds was cracked and was wondering if a cracked manifold can give you a decrease in power. The few i have spoken to say YES. Anyho i sourced a set of genie extractors for 90 bucks but they were from an auto. I was wondering if that was a problem. I have done a bit of searching and apparantly it is a problem BUT they can be made to work if you persist. Could anyone shed some light on my current situation.

Also the motor i got was out of a vt and there is a valve or something that joins to the throttle body. Can this just be blanked off and the other reason for getting new manifolds was the vt manifolds were different sizes to the VS !

Cheers for any help

[seq4x4]

Auto extractors will work on a manual. Manuals will not work on a Auto. This is the case for a VS with paccies. Not 100% on what you mentioned. Find the manual ones if you can, they sound so much better then the autos.

[reeceo]

Meh not fussed. And thats exactly what i needed to know cheers ! Havent really found extractors to make much difference in sound though. This car has 2.5 from the cat with a muffler in there somewhere and a shiny cat haha. Do they make much of a difference in power ?

[seq4x4]

I have a full exhaust system. Pacemakers, to custom y-piece to a standard cat, to a custom made 2.5" cat back system with one muffler. Excessivly loud, good on fuel, revs alot freeer and the 1000rpm to 1500rpm exhaust note makes me cream my pants some times. At high RPM still sounds like a 6

[reeceo]

It looks like the manual extractors dont fit ( bit of modification will be performed i suppose. the new extractors aare wayyyy longer than the std manifold as well so some chopping of the exhaust is needed as well. If i can get them to fit past the steering arm that is

[James39]

It looks like the manual extractors dont fit ( bit of modification will be performed i suppose. the new extractors aare wayyyy longer than the std manifold as well so some chopping of the exhaust is needed as well. If i can get them to fit past the steering arm that is

I used the whole exhaust system with paccies from a manual VS on my Auto...

You have to un-bolt the steering rack to install the paccies.

[reeceo]

These hit on the bellhousing need to be bent downwards. will take a photo afterwards. took gearbox out and the bellhousing hits on the pipes. if i get it red hot with a oxy i may be able to bend it down enough to clear it (i hope). has anyone ever modified extractors ?

[seq4x4]

I dont see why they wouldnt work, also i have never heard of manual extractors fitting an auto, as manual is skinnier, the exhaust hugs it more, auto being wider wont fit.

[James39]

I dont see why they wouldnt work, also i have never heard of manual extractors fitting an auto, as manual is skinnier, the exhaust hugs it more, auto being wider wont fit.

From what I know the pace makers fit both auto and manual. Going by the instructions they have to be modified to fit the T5 box but not the auto....

PH 5039
COMMODORE | VS | 3.8 LITRE V6 | ECOTEC
Manual & Automatic | Manuals with build date to 7/96

TUNED Design

P/Steering: Yes
Gasket: DSF 83
Air Con: Yes
Primary Pipe: 1 ½" (38mm)
Oxy Sen: Yes
Secondary Pipe:
E.G.R: N/A
Outlet (flanged): 2"(51mm)

Y Branch: N/A
Fitting Time: 2 ½ Hrs

Note: Will fit variable ratio power steering.
Getrag 5 speed with build date after 7/96 original Y branch
will need modifying.

[reeceo]

Yep these are genies and a t5. The bloke i bought them off said they wont fit t5 but i took your guys word for it haha. the bellhousing wont bolt up (doing a engine change) will show with pictures. Has anyone done bending of pipes etc ?

[seq4x4]

To dig myself out of this hole, i said pacies. Bu i also just got proven wrong about manuals only fitting manuals.

[pjdm1980]

Wet fart anyone??? LOL

[James39]

Wet fart anyone??? LOL

You should hear my wet fart on my VS

[woteva]

Has anyone done bending of pipes etc ?

How far do you need to bend ?? Just heat and bend or cut and shut. You won't need to get it red hot if heating with an oxy.

[reeceo]

only about inch it needs to be bent ..

[Not_An_Abba_Fan]

If I had have seen this thread earlier I would have said exactly that.

As you have found out you need to bend one pipe to get it around the bell housing. The easiest way is to cut that section out and remake it.

[reeceo]

After its fitted though it looks like getting it inbetween the steering arm thing and the chassis will prove to be difficult. I couldnt even get it to fit with the steering arm off :/ the collector is quite large. these extractors are much longer than the std manifold and im assuming its because all the pipes are separate but it makes it very hard to fit. I really hope these are worht it.

[Not_An_Abba_Fan]

The rack has to be unbolted and move to the right as far as possible to get tthe RHS in as well.

[reeceo]

Ohk i would have thought the rack would only bolt in one way ?

[Not_An_Abba_Fan]

It does. I think you misunderstood. It has to be unbolted, pulled back and moved to the right to get the RHS in, then once it is in, you refit the rack back where it was. The headers won't go in past the steering shaft without moving the rack out of the way first.

[reeceo]

oh man extractors are a head f*** must be a problem when the engine is in. I thought it would be as easy as cake

[Not_An_Abba_Fan]

They're not that hard. More time consuming than difficult.

[reeceo]

sold them for 200 wasnt even on ebay for 3hrs stoked. not worth the hassle and little gain stock manifolds for the win !