Question for all of you with Top End Swap's

Started by GPChief, January 12, 2007, 06:53:32 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

GPChief

Am tearing down my old engine transferring parts....

I took off my exhaust manifolds and test fit the exhaust to my 3100 "big bore" heads and there is daylight from the exhaust port to the manifold?? (yes they are ported :icon_evil: :icon_evil:)

My question is are all of you top end swappers Using the new manifolds or the old TGP exhaust manifolds?
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

GutlessSupreme

Quote from: GPChief on January 12, 2007, 06:53:32 PM
I took off my exhaust manifolds and test fit the exhaust to my 3100 "big bore" heads and there is daylight from the exhaust port to the manifold?? (yes they are ported :icon_evil: :icon_evil:)

I'm not quite sure what that means, but yes, I believe almost everyone just ports the TGP manifolds to fit the 3x00 heads. From what I've read, a lot of guys on 60degree condemn this because they think there won't be enough material left to the manifold after they get port matched. But I don't think anyone's really had a problem with it yet.
-Tony
gtsdurango.net
'04 Dakota SLT Quad Cab V8 AWD/4x4 - current daily
'90 Turbo Grand Prix STE - Crane H260 Cam, Getrag 282 Swap, 1.6 Rockers, Homebrewn Mildly Ported/Polished Heads/Intakes, Intrax Front Lowering Springs, KYB GR2s, 34mm Sway Bar, CS FSTB, AWeb RSTB, ES Poly Sway Bar Bushings, Cooper Cobra 245 - I'm working on it...
'92 Gutless Supreme SL - Dead
'90 Turbo Grand Prix - RIP 6-15-05

TGPilot

Well Tom there is always the option of going next door to the water jet and getting flanges cut and making LG5 headers. We will have to make the front upper motor mount as well...but it shouldn't be too painful on the wallet with all of the companies on my street. ;)

GPChief

2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

TGPilot

#4
Are you talking about this as something being made?  :icon_eek: Or that there are flanges available? I know about the flanges. We could put something together for less than what he is asking.


sleeperred90tgp

God thoes are fugling ugly.

Thomas I am using the TGP manifolds. After 3 or 4 years they still dont leak. Don't know where your daylight comes from. Got any pictures?

You guys freezing your ass of there. Saw the wheather was horid. Take care

Jud

Quickest TGP on this planet.

:cheers:FASTEST TGP AWARD given By TGPforums!:cheers:

            Congratulations JUD! Keep an eye on your rear-view mirror for TGPilot

GPChief

Ken,

    The guy in Canada will sell me flanges for $45...time is running out for trying fo Fabbing stuff.

Jud,

    Had my "big bore" 3100 top end gasket matched and the exhaust ports are now almost bigger than the outer diameter of the TGP (LG5) Exhaust manifolds.   Will take pictures Mon.

Thomas
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

kuntzie

jud has a 3400 top end and 3500 intake, he doesnt seem to have a problem... they dont have to be perfecy
HIGHEST TRAP SPEED of Any TGP

current status: on stand -obd2swap harness, built vin V, built 4t65e-HD, weight reduction,

the plan- 2500lb, 500whp track whore


GPChief

Quote from: kuntzie on January 13, 2007, 08:53:27 PM
jud has a 3400 top end and 3500 intake, he doesnt seem to have a problem... they dont have to be perfecy

My exhaust ports on the "new" heads are already too big....Pics Mon will explain volumes.   
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

GutlessSupreme

Quote from: GPChief on January 13, 2007, 08:24:28 PM
Had my "big bore" 3100 top end gasket matched and the exhaust ports are now almost bigger than the outer diameter of the TGP (LG5) Exhaust manifolds.   Will take pictures Mon.

Thomas

Oh, I didn't realize you had them gasket matched. TGP manifolds are pretty out of the question then, they barely fit the stock sized ports on 3x00.
-Tony
gtsdurango.net
'04 Dakota SLT Quad Cab V8 AWD/4x4 - current daily
'90 Turbo Grand Prix STE - Crane H260 Cam, Getrag 282 Swap, 1.6 Rockers, Homebrewn Mildly Ported/Polished Heads/Intakes, Intrax Front Lowering Springs, KYB GR2s, 34mm Sway Bar, CS FSTB, AWeb RSTB, ES Poly Sway Bar Bushings, Cooper Cobra 245 - I'm working on it...
'92 Gutless Supreme SL - Dead
'90 Turbo Grand Prix - RIP 6-15-05

GPChief

2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

jimmy

           Are you telling me that no one can fab one of these up. ::) come on, there's gotta be one welder on this website thats got the guts :rocking:

TGPilot

Jud I deleted your post bud. Please try to be nice. I know things can get a bit on the annoying side with some of these guys...but let's keep it nice my friend! ;)

Jimmy...if GPChief had a bit more time I am sure he and I would make something that was far from the ordinary and work better than what most of the hacks on the internet are trying to do for the LG5 platform.

sleeperred90tgp

Quote from: GPChief on January 14, 2007, 11:35:18 AM
Another possible option...

http://www.secureleadercom.com/fsstore/default.asp?bodystyle=1&topdeptnumber=208&searchBit=3&dept=221

Yea if there ported you definatly have a problem. You can do alot of grinding on the upper portion of the ports but if they did anything to the lower part of the D, opps. If you can see the ports with your manifold on somebody really got carried away.

Sounds like it would be cheaper just to get another set of heads. I only paid like 200 or 250 for everything from the cam up including the front cover and PS pump. Thats been a couple years. Heck they may give them away now.

For that kind of money for headers get a 3400 top end. You will be happier.

Jud

Good luck.
Quickest TGP on this planet.

:cheers:FASTEST TGP AWARD given By TGPforums!:cheers:

            Congratulations JUD! Keep an eye on your rear-view mirror for TGPilot

sleeperred90tgp

Quote from: TGPilot on January 14, 2007, 09:07:18 PM
Jud I deleted your post bud. Please try to be nice. I know things can get a bit on the annoying side with some of these guys...but let's keep it nice my friend! ;)

Jimmy...if GPChief had a bit more time I am sure he and I would make something that was far from the ordinary and work better than what most of the hacks on the internet are trying to do for the LG5 platform.

I didn't figure it would last long.  Annoying you better believe it. Couldn't help it.

Jud
Quickest TGP on this planet.

:cheers:FASTEST TGP AWARD given By TGPforums!:cheers:

            Congratulations JUD! Keep an eye on your rear-view mirror for TGPilot