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[ob1]

how many 10ths of compression can one expect to gain in a 110ci motor with andrews 54h cams in going to a cometic .030 instead of the stock gasket....

Just curious...


Thanks.

Tim

[hd-dude]

Dont have the calculator handy but if i recall its about a half a point in compression going from a. 060 to a .030 head gasket.

[HD Street Performance]

Jim
What gasket is .060? The OEM is .052 isn't it? That is the one I have. Is there a later revision and what is the compressed height of that? Thanks

[hd-dude]

Jim
What gasket is .060? The OEM is .052 isn't it? That is the one I have. Is there a later revision and what is the compressed height of that? Thanks

not sure was going from memory on the thickness and calcator. Will check on monday.

[timtoolman]

i thought stock was .042  i may be mistaken

[ob1]

Thanks for the input guys, i was told that they should be either .045 or .052 stock. i am just going to have them decked to bring the compression up to 9.8 and install some adjustable push rods. Andrews said that 9.8 was a good number for the 54 cam and that is what i am going with. trying to stay away from the harder starting and a ping machine, but yet have a good power combination.

[hd-dude]

.052" is correct for the stock head gaskets.
Based on the calculator that I have the compression will increase by .39 going from a .052 to a .030 head gasket

[ob1]

so am i to get this right. if stock is 9.3 the cometic gasket would bring it up to 9.69 or 9.369???

[Talon]

Head gasket -.015 will give approx .3 in compression, .030 vs the stock .045 gasket.

[hd-dude]

so am i to get this right. if stock is 9.3 the cometic gasket would bring it up to 9.69 or 9.369

[Black Diamond]

A little of topic but why are the 2011 110 motors rated @ 9.15 - 1 vs earlier 110 @ 9.3 -1? What did Harley change in the motor to loss 0.15 compression?

JW

[sadunbar]

A little of topic but why are the 2011 110 motors rated @ 9.15 - 1 vs earlier 110 @ 9.3 -1? What did Harley change in the motor to loss 0.15 compression?

JW

I could easily be wrong here - but I think the head gaskets went from .04something to .052...

[grc]

A little of topic but why are the 2011 110 motors rated @ 9.15 - 1 vs earlier 110 @ 9.3 -1? What did Harley change in the motor to loss 0.15 compression?

JW

The '07 and '08 110's were listed at 9.3:1, the '09 and later 110's are listed at 9.15:1.  The head gasket part number changed for '09 from 16801-07A to 16801-07B. 


Jerry

[Black Diamond]

I could easily be wrong here - but I think the head gaskets went from .04something to .052...

The '07 and '08 110's were listed at 9.3:1, the '09 and later 110's are listed at 9.15:1.  The head gasket part number changed for '09 from 16801-07A to 16801-07B. 


Jerry

That would do it. Must have been when the "fixed" the leak.

JW

[ob1]

Starting to think that spending the money to have the heads decked to 9.8 compression and to have new adjustable push rods installed isnt worth the money when i can mearly change the head gasket to get to 9.6 and save the money.

is the 225.00 for .2 of worth it? power wise and dependability wise??

Open for answers