possible cracked head

[CajunKenny]

Hopefully he remembers everything! Many a 7M has been messed up by various shops/mechanics.

There aren't many folks that I would let wrench on my car; but, if you trust him, he knows the 7M, and he does good work, I would treat him well because he'll be worth it!

 

[crisp]

It’s been a while since I’ve visited this subject; but, the thermostat prevents coolant flow to the radiator allowing the engine to reach operating temp as quickly as possible reducing engine wear, crud deposits throughout the coolant path, emissions and such… So with the ‘Jiggler’ thingy cut out it would in fact allow air to pass easier; but, would also reduce the warm up time of the engine (and the benefits listed above) because of the now flowing coolant.

The reduced warm up time is negligible I’m sure so I think that the benefit of allowing air to escape easier/quicker out weighs the negative affects of cutting out the ‘Jiggler’ thingy.

Sorry for the mini-novel. I was just sort of thinking out loud there...

In short, Everyone Cut off your Jigglers!

I think you mean "increase" warm up time with coolant flowing... no?


(Reduce temp. rise rate... or delay the heating process... or increase the time until up to temp., etc...)

...just actually read everything in the thread... and that struck me as inverted.




-crisp

 

[CajunKenny]

You got it...good catch! That was my dislexic day. I have one of those about once a week. :biglaugh:

I hope we all know what I meant though.

 

[crisp]

^^^ Yup. I knew what you MEANT!


I had a crack in the exhaust plenum once... so coolant would eventually evap out... but NO effect on performance! Kept evaporating more and more rapidly (likely crack grew...) and then I swapped heads. Fresh reman. did great until it dropped a valve seat and stuck a valve in #3! DOH!

...just getting my next head/install back together.

G/L!


-crisp