L98 Intake clogged
07-21-2011, 10:03 PM
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Car: '89 Flame red metallic GTA!!
Engine: L98
Transmission: 700R4
Axle/Gears: 3.27
L98 Intake clogged
Before I pulled off the intake assembly on my GTA the car was running a little rough; it didn't quite sound like a good L98 with flowmasters should - muffled almost - and it obviously didn't have full power and would stall after a bit. So I pulled off all of the intake parts with the intent of maybe porting those or upgrading to higher flow parts. Once I pealed off the manifold I found some serious issues. I am posting a couple of short vids for ya'll to see - hope someone may know what may have caused this so I don't have to tear into it this far (at least until I swap out the heads/cam/and valve-train 
) again right after making the mods I want to. Thanks for any comments.
http://www.youtube.com/watch?v=At9xbk4WFq8
http://www.youtube.com/watch?v=w-rNH22JEQE
) again right after making the mods I want to. Thanks for any comments.http://www.youtube.com/watch?v=At9xbk4WFq8
http://www.youtube.com/watch?v=w-rNH22JEQE
Last edited by Lampropeltis; 07-22-2011 at 10:20 PM. Reason: added second vid
07-24-2011, 01:57 AM
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Re: L98 Intake clogged
your vid asked for a new manifold.
http://www.firstfuelinjection.com/products.htm
when i got enough... oh boy!
-- edit--
forgot to add, there is a guy who just installed the FIRST tpi setup on his bird and covers the process in great detail: https://www.thirdgen.org/forums/tpi/...injection.html
http://www.firstfuelinjection.com/products.htm
when i got enough... oh boy!
-- edit--
forgot to add, there is a guy who just installed the FIRST tpi setup on his bird and covers the process in great detail: https://www.thirdgen.org/forums/tpi/...injection.html
Last edited by Moe87; 07-24-2011 at 11:16 AM.
07-24-2011, 02:35 AM
#3
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Re: L98 Intake clogged
Before I pulled off the intake assembly on my GTA the car was running a little rough; it didn't quite sound like a good L98 with flowmasters should - muffled almost - and it obviously didn't have full power and would stall after a bit. So I pulled off all of the intake parts with the intent of maybe porting those or upgrading to higher flow parts. Once I pealed off the manifold I found some serious issues. I am posting a couple of short vids for ya'll to see - hope someone may know what may have caused this so I don't have to tear into it this far (at least until I swap out the heads/cam/and valve-train ) again right after making the mods I want to. Thanks for any comments.
http://www.youtube.com/watch?v=At9xbk4WFq8
http://www.youtube.com/watch?v=w-rNH22JEQE
) again right after making the mods I want to. Thanks for any comments.http://www.youtube.com/watch?v=At9xbk4WFq8
http://www.youtube.com/watch?v=w-rNH22JEQE
I don't think that would cause a problem with the car running properly if it was blocked with crude. Keep looking you probably have something else wrong with the car. Have you done a compression check on the motor by any chance?
07-24-2011, 04:01 AM
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Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
Re: L98 Intake clogged
it is dried coolant.
the intake gaskets were leaking a little bit around those ports which is what causes the coolant to jell up.
the FIRST intake that Moe posted the link to is a good up grade.
it isn't cheap, but it is the complete intake, base, fuel rails, runners, plenum and throttle body.
you can go with one of the other aftermarket bases and a set of aftermarket runners, but that way isn't cheap either. add in an aftermarket throttle body and your getting close the the price of a FIRST.
you would need an aftermarket fuel pressure regulator to go with the FIRST, but unless you have recently replaced the stock regulator, your probably ready for a new one anyway.
with major port work, the other TPI LTR bases and runners end about where the FIRST is right out of the box.
the intake gaskets were leaking a little bit around those ports which is what causes the coolant to jell up.
the FIRST intake that Moe posted the link to is a good up grade.
it isn't cheap, but it is the complete intake, base, fuel rails, runners, plenum and throttle body.
you can go with one of the other aftermarket bases and a set of aftermarket runners, but that way isn't cheap either. add in an aftermarket throttle body and your getting close the the price of a FIRST.
you would need an aftermarket fuel pressure regulator to go with the FIRST, but unless you have recently replaced the stock regulator, your probably ready for a new one anyway.
with major port work, the other TPI LTR bases and runners end about where the FIRST is right out of the box.
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