eengler

Are these block isolators really needed??? please help!

Paul M

Are you talking about the aluminum iso blocks between the carb and the engine?

Dan S

Paul,
I think thats what eengler meens.

The answer is.....yes

Dan

Ron Olson

My Feedback: (1)

What he said. It helps to keep the heat from the block affecting the gas. Some people are also using them now as a tuning tool finding the the thickness of the block can make a difference in how well the engine runs.
Ever wonder why Pro Stock Drag racers run tall plenum chambers on their cars?

Paul M

You don't have to have the aluminum aftermarket ones, but if the stock isolator block warps it can wreck havok with tuning the engine. I have never used one but I have heard some people swear by them.

eengler

Is there any that you would recommend? The CC iso block looks nice, just a little pricey to throw away $45 on something not worth it. But i am all to it, if it will make the boat 1mph faster!!! hahahahah

Paul M

Not saying they are not worth it. I have 2 boats that run in the 70's with stock Iso blocks so I have not chosen to buy one.

lewisdf4

I used the stock plastic one, I found it great for ease of modification. I had to drill it out nearly double the size, match port it to the head and fill and re-drill the crank presure hole to suit the new bigger carby. I know this can be done with an alloy part but I loved how easy the plastic was to work with....
Cheers, Chris

RKS1949

B H Hanson makes a nice "block",all their parts are "Top Shelf" too. Ron

Ron Olson

My Feedback: (1)

Top Secret Boats sells one with Teflon gaskets which seems to be the way to go right now. Carlo may have those also.