96-98 guys with pi intakes

I didn't use the plates, just some rtv. No problems so far car runs fine.

TangerineGT96 said:

hey thanks man that help out alot!! do you have the adapter plate on your car

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no, I used NPI gaskets + RTV, either do that or use the PI gaskets (that might be the best choice, the longevity of RTV when exposed to oil/gas is questionable). Also, with the adapter plate, you will need a tune as it raises the injectors and messes up the spray

TangerineGT96 said:

sweet sounds like i may be doin the intake swap this weekend how does your car run now?

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runs great man. Expect your car to pull much better at 4000+ and there is a little low end gain too. Ive had it on since july and I love it. The best thing to do is to get lots of plastic baggies and label them, then put their respective bolts inside. Its all about being organized and taking your time so you don't lose anything - I dropped a thermostat housing bolt and it took me 2 hours to find it lol. Here are some things you will need in addition to what you have been told already-

Fuel line disconnect tools (dont forget these or your life will be difficult)
Coolant
Plastic baggies + marker
Permatex Black RTV
New serpentine belt (not necessary if yours is OK)
Torque wrench
Rachets, extensions. Most bolts are 10mm
Vacuum (lots of junk accumulates in the valley beneath the manifold)
Lots of rags!!! Use some to plug the ports in the heads while the manifold is off

While you're at it, may as well throw in a new thermostat (stock 192 or a 180), and replace your plugs and wires if you need to especially if you managed to leak coolant into the plug holes.

Also, you should be very careful to make sure that the RTV has ample time to cure before starting your motor. If using PI gaskets and the RTV is not cured, the coolant may be under enough pressure to blast through the silicon and then leak. If using NPIs, you'll have a damn nice manifold leak and your car will run like crap. Looking back, I should have used PI gaskets because you need hardly any RTV, and you dont run the risk of using too much and getting it in the intake ports on the heads. Here is some good literature
United majority Manifold install guide
My own install - mostly pics

Good luck man! Feel free to PM me if you need help

just checked Permatex's site - apparently Ultra black RTV has outstanding oil resistance and one of the recommended uses is for intake manifolds
http://www.permatex.com/auto/autouh.asp?automotive=yes&f_call=get_item&item_no=22072

stangGT97 said:

my NPI alternater bracket worked just fine

check here - step by step instructions

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question about this site: the guy says install PI Gaskets and Non PI Gaskets. Umm which ones do i buy and which one is suppossed to be installed??

On that link, adapter plates were used which requires the use of both gaskets. I prefer the use of the PI gaskets and not use the plates.

okay so how would i do the install without the plates?

Did u buy the stock PI Intake or did u buy a modified one? Im getting worried now because three places have told me the stock pi wont work and that u need to buy a modified one.

Ok, follow those directions on that link. When you get to the part of putting the intake on the heads, you put RTV on the coolant port of the head and PI gasket.

I will post the pics of where the RTV is required.

The PI gasket on a SVO head, exact same intake ports and coolant ports as the NPI head.


A closeup of the coolant port that requires the RTV


The exact area that requires the RTV


The circled area is where you add the RTV to the gasket and head to completely seal off the coolant.


The other coolant port on the head. Just so you see that it does not require RTV.


Now you have to modify the intake, that link tells you how to do it. You do not have to buy a modified intake.