Hey guys, I decided to separate this problem from my head thread in order to try and get a better understanding.

So I have been fooling with getting the measurements all day today and finally gave up... I removed the rings and put the cylinders back on to get the positive measurement (best I can)... I am not able to bolt the cylinders down this way but looks like they seated pretty well so it will be real close.

Note by positive I mean sticking out of the cylinder... (it may be considered negative DH?)

My results:
Cyl 1 = 1.5mm (0.059)
Cyl 2 = 1.2mm (0.047) (give or take)
Cyl 3 = 1.5mm (0.059)
Cyl 4 = 1.1mm (0.043) (give or take)

Visually it did seem like 1 and 3 were a tad farther out... but agn no way to bolt the cylinders down.

So with these numbers what is the best way for me to set the Deck Height... should I just get an 0.100 shim and call it a day...


I know I could shave the piston heads to get zero deck height and then shim as needed for exact amount as well... but unsure who can do that near me... if the above is in speck, I will go with it...

thanks

what bore are your cylinders? do you know what cc your heads are?

I just switched the cylinders front to rear and now it looks almost even over 1mm under 1.5

78mm stroke
94mm Bore
heads cc at 56 (they are cnc'd)

And I did find these:
15166 94mm cylinder spacers, .098
http://www.proflowperformance.com/products2.html
Bottom right... looks like they may do it... thoughts?

I would think you would want to bolt them down.1&2 should be shimmed the same and 3&4 should be shimmed the same to give you the same deck height.if your block has never been decked one side I would think will need a little more shim depending on what CR you are trying to achieve.if you just put the same shim in each one then you will not have each one the same.it may not make much difference but I'd want the same exact DH on each cylinder IMO.Chad

_________________
NOW GAS IT!!!!!

I wish I had better tools... I can’t see a way to bolt them down with the piston outside the cylinder. I tried to bolt them down and then removed the bolts to allow the piston to go outside the cylinder agn...

best I can tell 1&2 are even and 3&4 are even

1&2 = about 1.4 (0.055)
3&4 = about 1.1 (0.043)

All I have is a micrometer to measure (not even digital)...

so what now? get the .098 spacers and deal with outcome or should I find a way to balance the sides so they are equal?


Approx numbers with the .098 spacer.
.098 - .055 = .043
.098 - .043 = .055

Or I could find .086 for side 3&4 and have an even .043... if .086 exists...

If u can get a piece of 1" flat stock drill it to fit over the head studs then put it across the center of the cylinder. Check each cylinder with them pulled down and see what u have.

Put some kind of spacers over the head studs and VERY lightly tighten the cylinders down. You can use a socket or cut a small piece of tubing.

Didn't see the part where u said they were sticking out of cylinder. Don't think u want to do it the way I said. Lol

I will try to use some sort of spacer tonight... I checked agn last night and only checked each side of the wrist pin and it looks like it’s about and even 1.35 (.053) - (best I can tell with my micrometer) so I am going to order the .098 spacer and install that...

.098
1.35 (0.053) = .045 Deck Height

I will still try to get some tubing or something to re check but I think it’s pretty close as is... Once I get the spacers I will be able to bolt a bar on and use feeler gauges to check as well.

Keep working at it . It will payoff