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#1 |
Registered User
Join Date: Jun 2004
Location: Dallas, Tx
Posts: 207
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Quick question about TDC...
When the #1 cylinder is at TDC, where should the valves for that cylinder be positioned?
Should the intake valve be just closing? Thanks, Nick |
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#2 |
Senior Member
![]() Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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It should be already closed I think, since the upstroke to TDC in the charge part of the cycle is compression of the fuel/air charge. It has to be in there to be compressed, so the fuel and air is homogenious for burning.
__________________
'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
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#3 |
Registered User
Join Date: Jun 2004
Location: Dallas, Tx
Posts: 207
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So basically, when the intake valve closes on the #1 cylinder the next TDC mark on the balancer will be the TRUE TDC?
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#4 | |
Don't say "Oops!", Doctor
Join Date: Nov 2003
Location: Houston, TX
Posts: 677
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Quote:
__________________
'Mutt 1968 CST LWB: R.I.P. 1967 Chevelle: TPI 454 beast 1967 C10 SWB: Claimed when Bumpster didn't put it on his list |
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#5 |
Registered User
Join Date: Jun 2004
Location: Dallas, Tx
Posts: 207
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Alright, thanks!
I think I stabbed my dist 180 out. I am just looking for a way to check and make sure before I crank it over anymore. |
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#6 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Might be easier to just switch plug wires at the cap. Swap each one with the one that's 180* across from it. If it starts, it was 180* out.
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