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I lost the rabbit #2935163
06/21/21 12:29 AM
06/21/21 12:29 AM
Joined: Jun 2016
Posts: 900
Washington
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hemienvy Offline OP
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hemienvy  Offline OP
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Washington
Distributor was out, engine was turned.

If you bring #1 up to TDC, how can you tell if it's compression/power or exhaust/intake ?

Blow air in and listen for leaks out the valves ?

Engine is all together.

Re: I lost the rabbit [Re: hemienvy] #2935164
06/21/21 01:05 AM
06/21/21 01:05 AM
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Tri-Cities, Washington
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VITC_GTX Offline
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Tri-Cities, Washington
Pull the spark plug. Put your finger over the spark plug hole and have someone turn the crank over. When the piston is coming up and it's coming up to TDC you'll feel air trying to escape from under your finger.

Re: I lost the rabbit [Re: VITC_GTX] #2935177
06/21/21 03:11 AM
06/21/21 03:11 AM
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North Dakota
6PakBee Offline
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North Dakota
Unless I'm mistaken, if it's a B/RB/Hemi you should be able to see the lifters for #1 cylinder through the distributor hole. A/LA/Early Hemi/Poly, I've never had much luck with the finger in the spark plug hole with a fresh motor. Off with the valve cover.


"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
Re: I lost the rabbit [Re: 6PakBee] #2935233
06/21/21 10:06 AM
06/21/21 10:06 AM
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Ontario, Canada
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Stanton Offline
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On the ex/in stroke the exhaust valve closes after TDC and the intake opens before TDC so there won't be much pressure to feel at the plug hole. But on the comp/ign stroke both valves are closed at TDC so the pressure will blow your finger out of the hole.

Re: I lost the rabbit [Re: Stanton] #2935415
06/21/21 08:41 PM
06/21/21 08:41 PM
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Omaha Ne
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TJP Offline
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Omaha Ne
Originally Posted by Stanton
On the ex/in stroke the exhaust valve closes after TDC and the intake opens before TDC so there won't be much pressure to feel at the plug hole. But on the comp/ign stroke both valves are closed at TDC so the pressure will blow your finger out of the hole.

iagree
And would suggest having someone "bump" the starter with the key or use a remote starter switch. As it starts to come up you'll fell the compression as mentioned. keep bumping it while watching for the timing mark as it approaches TDC while bumping.
if you go too far, you will have to rotate the crank almost twice to get back to to the compression stroke.

beer

Re: I lost the rabbit [Re: TJP] #2935490
06/22/21 01:05 AM
06/22/21 01:05 AM
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Posts: 900
Washington
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hemienvy Offline OP
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Washington
I took the valve cover off, I think it was leaking anyway.

I have to say, this is a 360 in a 79 D150 half ton. A small block in a truck.

AND THE F-N VALVE COVER ALMOST DIDN'T CLEAR THE BRAKE BOOSTER.

A small block in a truck, not a Hemi in an A-body.

Sheeesh.

Can barely reach the distributor, need scaffolding to stand on.

Re: I lost the rabbit [Re: hemienvy] #2935554
06/22/21 09:05 AM
06/22/21 09:05 AM
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Wichita
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GY3 Offline
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Wichita
Originally Posted by hemienvy
I took the valve cover off, I think it was leaking anyway.

I have to say, this is a 360 in a 79 D150 half ton. A small block in a truck.

AND THE F-N VALVE COVER ALMOST DIDN'T CLEAR THE BRAKE BOOSTER.

A small block in a truck, not a Hemi in an A-body.

Sheeesh.

Can barely reach the distributor, need scaffolding to stand on.


I found it easiest to sit on the inner fender with my feet on the framerails while working on my '75 Powerwagon.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.







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