I have found that the intake manifold on my 1970 E-Type, Series 2 has butterfly valves immediately after the carbs. I don't see why these are necessary and wonder if the engine would operate better without these obstructions in the way. I imagine they are related to emissions control? Thanks for any help.
Submitted by lincmgmt@hotmail.com on Sun, 07/10/2011 - 11:08
Submitted by SE12-44804 on Wed, 07/06/2011 - 21:28
Intake manifold butterflies - necessary?
Forgot to add that I removed the crossover pipe and blocked it off at the intake manifold.
Submitted by SE12-44804 on Wed, 07/06/2011 - 21:27
Intake manifold butterflies - necessary?
I did the same with my 68 E. It starts quickly and runs great.
Submitted by DavidBarnes71@… on Wed, 07/06/2011 - 19:53
Intake manifold butterflies - necessary?
I removed the manifold butterfly's from my '68 E-type and it gave me much better throttle response without them. I just removed the two screws that attach each buttlerfly to the shaft and pulled them out of the slot in the shaft leaving evrything else intact. This way I could easlity re-install them if ever needed but since it has been running great this way for several years I doubt that will ever happen.
David Barnes
'68 FHC
Great! I'll try it on my car. Thanks for the response!