|10-23-2013 07:51 PM|
|10-23-2013 07:41 PM|
|jokerZ71||12 second recipe for sure !!! LOL.This is from July & OP hasn't ckd bak in since.|
|10-23-2013 06:05 PM|
Small cube motor, 210 heads....and junk ones at that, and a cam picked by throwing a dart
At a catalogue.....sounds like a fun combo.
|10-23-2013 04:20 PM|
|Ossie||I had a 327 in a new 68 Camaro back in the day. I found the valve guides (cut in the head) were shot on one cylinder. In fact, all of them on one head were too large. Pressed in guide cured the problem.|
|10-23-2013 08:58 AM|
Pull the heads, install these:Pro Series SBC Small Block Chevy Aluminum Heads 210cc 64cc 350 | eBay
CAN'T beat that price, Combustion chamber should be the same as the 461-462 double humps, and check the cylinders while they're off. If there are deep scratches, drop the pan, pull that piston out, hone said bore, install new CAST ring set and re-install-torque to spec.
If the bores are nice and shiny like a mirror, (NO cross-hatch showing) just pull it and rebuild it. With those heads (double humps) Unless they're set up for NO-LEAD gas, they might have beat the seats in the head to death (or an 8th inch or more) has the 'lash' been adjusted often over the years? Solid cam?
Put a smaller cam in there maybe a 264deg or so and for better response and mileage.
You state that you really don't know the age/condition/mileage of your 327. If the block states in fact a '70, it's probably a 350 block with the 327 internals.
If you're in the Memphis area, I'd like to see it..!
|08-06-2013 02:05 PM|
The only way to find the problem is to find the problem we can guess all day long.
I've heard if the 2nd compression ring is installed upside down it will consume extra oil. However the diagnosis of bore wear/damage makes total sense.
|08-06-2013 01:52 PM|
the scratch was so deep that the whole cylinder needed to be sleeved
I just bought a new short block and tossed the old block in a corner
|08-06-2013 01:48 PM|
|AutoGear||.250" deep scratch?|
|08-05-2013 02:07 PM|
I had an engine that had the same problem as yours
turned out there was a 1/4 inch deep grove in my cylinder wall
|08-05-2013 12:27 AM|
Bad seals/guides generally will smoke on start up. His isn't.
I agree w/those who suspect ring seal. There's a chance the bore is scored or a low tension ring was accidentally installed, or the second ring was installed upside down. Just because the bad hole showed relatively high compression doesn't necessarily mean all is well- a wet cylinder will seal relatively well even w/wear if it's wet w/oil.
You have quite a swing between high and low on the compression test- sounds like it may be time to freshen it up.
|08-04-2013 09:40 PM|
Its called ring flutter and that's exactly why most ring makers now use a bigger end gap on the 2nd ring
I highly doubt that's what's going on here but I have been wrong before. my bet is the valve seals and possibly even a worn valve guide.
I recently had a 69 Camaro convertible in the shop that was puffing out blue smoke over 4000 rpm, it was the valve seals.
easy way to check if that cylinder is firing right is with a water bottle on the manifold no hiss means cold/dead cylinder
|08-01-2013 11:08 AM|
Another place to consider is the loss of a cam lobe. This upsets normal function in the cylinder which will pull a lot of oil. Since you already have a suspect cylinder, pulling a valve cover and checking this action should be pretty quick.
|08-01-2013 08:32 AM|
|lg1969||It could be a generically engineered 327.|
|07-31-2013 06:33 PM|
|jokerZ71||There were no 327's made in the mid 70's. 327 ran from 62 til, I think, the very beginning of 69.Your engine is either older by a few yrs,or,it's not a 327.As far as your question tho,are you sure that cylinder is firing? You could be sucking oil into the cylinder from a bad intake gasket,or,other sources.To accurately pinpoint the problem,you need to try a leakdown test.There are threads on here that desribe the procedure.|
|07-31-2013 06:28 PM|
|BOBCRMAN@aol.com||You have a problem in no.3 cylinder. Possibly an oil ring rail or expander got twisted or out of place on rebuild. There is a reason for the black plug. No smoke on fire up is good. Smoke under power is usually a cylinder problem..|
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