|
|
|
|
| Author |
|
|
It's a trap...
|
piston to head / valve clearance - How much is too much?
Hi gents, I measured the piston smush with solder and I got these numbers:
1.71 1.49 1.61. 3.0L stock everything. I used a .35 cylinder base gaskets that came with some kit I got. I am going to order the copper gaskets (.25), will that be acceptable? That would make 1.61 1.36 1.51. I believe the spec is 1.25 to 1.5. How close do I have to be cylinder to cylinder? I haven't done the other side yet. Cheers, Mike. 
__________________
Run like the wind, straining the limits of machine and man.... 2006 Atlas Gray Carrera 4, '81 911SC Black on Tan (SOLD), 2006 Acura RSX Type S, '13 Dodge Durango (wifeys). |
||
06-16-2014, 05:40 PM
|
|
|
Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,072
|
You mean squish?
Valves are closest to pistons mid stroke when both vales are open if I remember my facts correct. Usually .030 squish is a good target.
__________________
D troop 3/5 Air Cav,( Bastard CAV) and 162 Assult Helicopter Co- (Vultures) South of Saigon, U Minh Forest, Delta, and all parts in between |
||
|
06-20-2014, 03:27 PM
|
|
|
Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
|
Your measurement of the base gasket is incorrect.
there is .25 and .5 mm You most likely have a .25 gasket Your measurements are most likely inaccurate. Careful measurement is required and you are probably within spec.
__________________
Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
||
|
06-20-2014, 06:40 PM
|
|
|
It's a trap...
|
Aaron, I don't mean to be argumentative, but the package they came is says 35/K right on it. I measured with a digital mic ~ .31 to .33. Photo's to follow...
Regardless, I did receive the .25 coppers, as you said, and that is what I am going to use. Thank you for the help, gents. Cheers.
__________________
Run like the wind, straining the limits of machine and man.... 2006 Atlas Gray Carrera 4, '81 911SC Black on Tan (SOLD), 2006 Acura RSX Type S, '13 Dodge Durango (wifeys). |
||
|
06-20-2014, 07:20 PM
|
|
|
It's a trap...
|
Black victor reinz are measuring ~.31 - .33. Copper ~ .24 - .25mm.
   Weird, but I am using the .25 as you suggested.
__________________
Run like the wind, straining the limits of machine and man.... 2006 Atlas Gray Carrera 4, '81 911SC Black on Tan (SOLD), 2006 Acura RSX Type S, '13 Dodge Durango (wifeys). |
||
|
06-20-2014, 07:32 PM
|
|
|
Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
|
Ah, I have never used the Victor Reinz products. No argument here.
If your measurements are correct, you can run no shims and be at 1.25 mm
__________________
Aaron. F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
||
|
06-21-2014, 08:28 AM
|
|
|
Speed Buggy
