Good lookin out fellas! Im gonna have to hit up another autozone, and get another set...
GL Freddie. I'll do the same, when I get another cap.

 

Don't buy the junk from Autozone/Napa/etc. Get EPDM caps on this page:

http://www.mcmaster.com/#rubber-end-caps/=7yru3w

 

did this to mine just now i formed a little sputter from stop and go .. i suspect the iac needs to learn or something.. could also be because i ran my tank so low with the double pumper.. it doesn't like that.

Btw, I got mine from Advanced Auto. They have a big variety pack and these ****ers are very well made. I used a dab of super glue + zip tie.. Doubt its going anywhere

 

I like the quantities they come in. Lol. Nice find Mychailo.

 

these seem to be holding 36psi and i got them from advanced auto.. see how thick they are?

 

are these better then the ones i just posted mr fred? cause the ones i got here are really freakin thick.

 

So guys if the caps I pictured are not a good long term cap then what do we need? post the info so I can buy from that site. I need a cap for the 2 ports on my tb and the big port on my intake manifold.

 

Those are really beefy. The only problem I forsee is the rubber deteriorating due to heat exposure. The ones Mrfred posted are available in high temp compounds as well.

 

Someone post the sizes required so we can all order the good stuff from that site!

 

Originally Posted by Evoryder
^3/16" is kinda big for the nipple. I would go with either 1/8" or 3/32"(3/32 is better because it's a snug perfect fit.)

my autozone must suck, cause the only valuepack they had was 8 peices, and guess what, none of them are the correct size.

Im gonna check out the link mrfred posted...

 

I purchased a Set from mcmaster-Carr yesterday. Good for up to 600*F for 10 mins direct contact.

TSCOmp- the ones you bought are beefy,however,they suck when it comes to heat. After a month or so they become brittle and eventually crack.

 

did i order the right ones? Line Quantity Item Ships Unit Price Total Price
1 1 Pack 92805K31 Push-on High-Temperature Silicone Rubber Cap Fits 3/32" Outside Diameter, 3/4" Inside H, Packs of 100

 

and what about the bigger outlet on the intake manifold where we use the fuel line clamp on.. that doesnt crack or does it? if so what size is it so i can get that in better quality also

 

I've been looking for a cap to go onto the nipple on the heating tube that goes around the back of the motor which used to connect to the heater core. I've purchased EPDM and Nitrile (available at NAPA) and they both crack after several months. This would have to be a big one, I don't know how big off hand but I'd say somewhere around 3/4". I can't find a suitable material for high pressure and temp.

 

That's the one.