Manifold heat control

gunnerb17 · Post by **gunnerb17** » Mon Jul 02, 2007 1:37 pm

Does anyone have a picture of how the manifold heat control is positioned when the engine is not running.Also how the spring sets around the shaft .Thanks in advance Gale

Post by **wesk** » Mon Jul 02, 2007 11:32 pm

Be careful. There are two different heat riser setups. The most common unit available today is the CJ/M38 unit. The WWII MB unit is quite different.

M38

Comparison of the two types. Can the original author of this drawing email me so I can get the proper credit posted?

maeserik · Post by **maeserik** » Tue Jul 03, 2007 12:58 am

I replaced the spring in the past, but when engine warm the counterweight comes in the halfway position, not higher.

During summer i put a wire on the weight and block it in the full open position, no preheating. I feel no difference when driving the jeep.

There has me been told, better to drive with no prehaeting than a valve in a posioton with continu preheating.

more info :
http://www.g503.com/forums/viewtopic.ph ... at+control

Erik

Post by **wesk** » Tue Jul 03, 2007 1:44 am

A word of caution with that G503 posting reference. It is for the WWII MB and that spring is opposite a M38.

gunnerb17 · Post by **gunnerb17** » Wed Jul 04, 2007 7:38 pm

Many THANKS everyone,this helps a lot.