Leaderboard

no, transmission type does not matter, unless you specifically need the cooling tubes for an auto... you can use the same radiator in a manual just fine, just cap the tube ends to keep dirt out (they should come with caps on them) It is far more cost effective for the manufacturers to make one radiator that will work in both applications than to make 2 different versions.

Agreed with @Crazyeights on the single port (carb) heads. Easier to make a manifold for and probably no real gains in the MPFI heads. But to answer your question, all interchangeable. Cam profiles changed between turbo and carb EA82s, but I’m not sure about how similar the NA MPFI cam profile is to the Carb units - or whether they’re actually the same (highly likely!). All the best with it. Do your research on intake runner length as this has lots to do with where your power will be made etc Typically, short runners for a revvy engine, not much torque down low. Long runners are good for low down torque but not so good for top end high rev work. That’s the basics on it, I’m sure there’s more detailed science to it. Cheers Bennie

Hi everyone I really appreciate all the suggestions you've put forth. The one post that sealed (no pun intended!) the deal was the suggestion to fill up the radiator and then run it up to temperature. I didn't follow that route exactly but what I did do achieved the same result. I filled up the radiator and then I used the pressure tool again to see what would happen. As the pressure rose to about 6 psi, a tiny stream of coolant started streaming down from the top of the radiator, several inches away from the bleeder screw. I will be ordering a new radiator. Thanks again for all your replies.