dkchandler

How do I determine if the #1 piston is at TDC? My crankshaft is in the right position and the #1 piston is at the very top of the cylinder. How do I know if this is the compression stroke?

 

himilefrontier

with a compression gauge.If the engine is building pressure as it goes up, it is the compression stroke.Another way is to put your finger in the spark plug hole and when it gets blown out, it is in the compression stroke.

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1998 Nissan Frontier XE/2wd/5spd 1 owner, 264k miles
1985 Olds Cutlass, 350 Chevy, owned for 14 years
WANTED: 1968-1973 Datsun 510 or 1991-1994 Sentra SE-R
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dkchandler

Well, I have not installed the heads yet. Can I tell by just the #1 piston position???

himilefrontier

That and the timing mark are all you have to go by then.

__________________
1998 Nissan Frontier XE/2wd/5spd 1 owner, 264k miles
1985 Olds Cutlass, 350 Chevy, owned for 14 years
WANTED: 1968-1973 Datsun 510 or 1991-1994 Sentra SE-R
http://www.myspace.com/junkyardengineer

aaronford

If you have yet to install the head, then go by the distributor to to determine when it is coming around to No. 1. If you have the distrib out as well, then there is no difference. As long as the No. 1 piston is up, you will adjust everything else accordingly as it is installed. Good Luck and Post Pics!!!

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Aaron Ford
95 2WD Nissan PU E
2002 Oldsmobile Intrigue GX
"The hard part about playing chicken is knowing when to flinch" Scott Glenn in The Hunt for Red October

 

dkchandler

aaronford,
Thanks for your input, the dist was out so I just assembled everything with the #1 piston at the top. Glad to hear I did it right. Thanks....

James

pull out the spark plug and put a rod in it... when the rod is at it's highest it will be at TDC.

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05 Frontier SE CC 4x4 (6spd)
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