great info Nick ! "a steam vent" that sounds like a good idea.

Big Dog wrote:


Jim is such a complainer...

See what we have to deal with over here.

Welcome,
Glad to see there are more people getting into the 944 spec racing. I met another guy here in LV that is looking to buy a 944 spec car. Hopefully we can get a group running here.

Mike, where is "LV"?

We need to get Nick a ruling on the "steam vent" I think it's a good idea, but we need to describe it for the new rules, so it's clear what we're allowing. Nick, can you descibe the parts involved, and specifically where it goes?

Sterling Doc wrote:



Yes please send some info. I missed that post earlier.

Although I don't have any issues bleeding the cooling system as is. Just fill it with bleed screw open and then squeeze the upper hose to make sure there is no air. With no heating system this works fine. I just did it this weekend on a fresh motor.

I agree bleeding is usually simple, but bleeding-ease is just a bonus to the steam vent.

It's a fairly simple mod... A small hole is drilled and tapped into the water jacket at the top rear of the cylinder head, then an additional segment of tubing is run from a fitting at this new port to the coolant tank allowing steam to escape the rear of the head.
Several people have experienced the "hot spot" head gasket failure on cyl #4. Lindsey racing claims that the rear portion of the head collects a pocket of steam, thus creating the hot spot.
I have added the port to several cylinder heads that I have rebuilt, and simply install a small threaded pipe plug. Some customers install the steam vent, others run the head as/is with the plug. Here is the tech page from Lindsey Racing: www.lindseyracing.com/mm5/merchant.mvc?S...ode=STEAMVENTINSTALL

Thanks,
-Nick