Intake manifold question.

[Barry Wolk]

I hate the burned passageways on my intake manifold. If I understand things correctly the exhaust valve creates a blockage that forces hot exhaust gasses through a passage in the head and into the intake manifold. This passage passes hot exhaust gasses under the manifold to aid in fuel atomization for cold start-up.

Seriously, how many of us drive our cars in very cold temperatures? None of us, I'll bet. How important is fast warm up when the minimum temperature we store them in is rarely below freezing.

My question is, could I not use the same trick the hot-rodders do and make a stainless blank for both sides? That would keep the gasses out of the intake manifold, keeping the paint from burning.

The next question is, would the exhaust valve need to be propped open or would it open on its own with the increased pressure?

[Don Henschel]

To be perfectly honest with you Barry, I wonder if we need them (for our summer and warm weather driving). I dont have one in mine (some savage beast torched mine out before I got the car). My intake never burns,(so I wouldnt bother with the plates) and the automatic choke works very well. Coolant also flows through the intake, and warms the intake as well (the heat riser doesnt stay closed anyway). As for the fast warmup, I set my chokes a bit lean, and let my toys warm up a bit even in summer so stalling isnt a problem. While it's on fast idle I do a walk around checking for anything out of the ordinary. You can prop the valve open, or remove the plate from the shaft and call it a day.

[Shelly Harris]

When I got the car mine was stuck wide open. I got it unstock and rotated it a gazzillion times and now it springs shut when cold, but never opens more than 80% because it can't get past a sticking point. Actually the car ran ok when it it was stuck wide open and I was considering taking the plate out but I was waiting for winter to see if that would be counter productive.

[Don Henschel]

Seriously, how many of us drive our cars in very cold temperatures? None of us, I'll bet. How important is fast warm up when the minimum temperature we store them in is rarely below freezing
Actually the car ran ok when it it was stick wide open and I was considering taking the plate out but I was waiting for winter to see if that would be counter productive.
:eek: I hope you don't drive it in winter........snow...salt..ice:D

[Shelly Harris]

:eek: I hope you don't drive it in winter........snow...salt..ice:D

No, but when I'm here in the winter, I do start it up every two weeks or so and if the streets are clear I'll take it through its gears around the block a few times and then back in the garage. Bad weathr, salt on the streets... no way.