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Messages - Dieselman966

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61
FE Technical Forum / Re: Stock 352.
« on: January 02, 2019, 10:20:58 PM »
I appreciate the lesson guys. So with out a better quench the fuel air mixture doesnt mix as good which can cause problems with higher compression.  Makes sense.

I'll grab a matching head gasket and slap it back together and I'll look into recurving the distributor.  As far as headers go I already bought a set of Sanderson headers. I was installing them along with building the new exhaust when this whole other snowball got ahold of me.  As the saying goes curiosity killed the cat. 

62
FE Technical Forum / Re: Stock 352.
« on: January 01, 2019, 11:21:55 PM »
I forgot to ask. Would using the cometic head gaskets that have a compressed thickness of .027 be worth putting since I have one head off? Or just save the money for the stroker build?

63
FE Technical Forum / Re: Stock 352.
« on: January 01, 2019, 10:51:52 PM »
My427stang what is the quench doing? I'm just trying to understand what's going on here.  Seems to be all higher compression is not created equal.  Does the higher quench number make for bad combustion?

Werbyford

Ultimately I'll be doing another engine. It's just a bummer to get rid of this engine with it being a fresh rebuild.  From what I have read swapping a 390 crank in to the block I have would require the crank, rods and cylinders getting bored another .020 over to take the 390 pistons.

I think I'll just get a head gasket and put it back together. Better to have a driver while I sort this out.


64
FE Technical Forum / Re: Stock 352.
« on: January 01, 2019, 10:57:39 AM »
I'm going to check out a set of heads that are local to me. Guy claims smaller combustion chambers but not sure by how much. 

The cc specs posted for the pistons are 6.3. That's what I was using along with 73 for chamber cc. Piston is .079 in the hole. Checked it a half dozen times.

I was gonna put the heads back on with these gaskets. .027 thickness and maybe the heads this guy has up here if they check out.
https://www.cometic.com/i-24769458-ford-fe-big-block-352-428ci-v8-027-mls-cylinder-head-gasket-4-080-gasket-bore-each.html

Kind of sounds like I might be throwing good money after bad money her though. Itll be a few years before I can put a motor together for it just trying to put a bandaid on it for now.

65
FE Technical Forum / Re: Stock 352.
« on: December 31, 2018, 11:40:51 PM »
Went to the garage to finish welding the exhaust this morning and decided to pull the intake to investigate a vacuum leak. Ended up pulling the passenger side head off to take some measurements. Pistons are .079 in the hole with felpro 8554pt head gaskets. Specs say they are .0468-.0572 thickness.  This puts me just over 8:1 compression.

66
FE Technical Forum / Re: Intake manifold vacuum leak
« on: December 31, 2018, 11:14:17 PM »
Pulled the intake. The intake gaskets looked ok from what I could tell. I kept going and pulled the passenger side head off to check some things for a low power issue. Found out I have a compression ratio in the high 7. So I'll fix that and see where that leaves the vacuum leak.

67
FE Technical Forum / Re: Intake manifold vacuum leak
« on: December 30, 2018, 07:01:30 PM »
I forgot I put a new pcv in along with new line to it. The motor slows down when I spray at the 4th intake bolt on the right side. I put up some cardboard to shield the carb from the aerosol.   Seems weird that it would pull enough air from around a bolt. I dont get an rpm change anywhere else though.

68
FE Technical Forum / Re: Intake manifold vacuum leak
« on: December 30, 2018, 11:25:15 AM »
It could start raiser. Cranks over 4 or 5 times to start after its warm. Vacuum is at 14.5 at idle and goes up to 20 when revved up to 1500 rpm. PVC is capped of on the carb and no smoke out of the tail pipes. I'll have to spray again and try to keep it away from the carb this time.

69
FE Technical Forum / Intake manifold vacuum leak
« on: December 30, 2018, 02:41:23 AM »
Finished up installing my headers and running new exhaust on the galaxie today. Checked for vacuum leaks around the intake and found some by the intake bolt holes.  Seems weird that it can suck it in that far with the gaskets being under the valve covers. How are you guys checking for intake manifold vacuum leaks leaks? Do you pull valve covers off to check them?

70
FE Technical Forum / Re: Stock 352.
« on: December 26, 2018, 11:21:24 AM »
I would have to check the vacuum reading again. I remember it being quite a bit lower than my magnum 360 was. Around 15" at idle. My magnum was over 20" for comparison.  The needle is steady for the most part. It seems to fluctuate with a stumble that the engine has. I can't seem to find a reason for that. The exhaust manifolds were leaking pretty bad so I am currently putting headers on it. With some different exhaust. I hoping to be able to figure out the stumble them. 

The transmission is a rebuilt cruise-o-matic. I have paper work on that also.

Sounds like I am battling a low compression issue.  Would my c4ae 6090g heads be worth having worked over? They were rebuilt with the engine also. Chris401 the heads you have were machined down to fit inside the cylinder bore? Does that create any flow issues or is that less of a problem than the low compression issue.  And what would have to be done to the intake to fit with those heads?

71
FE Technical Forum / Stock 352.
« on: December 26, 2018, 01:42:57 AM »
Hi guys. I have been digging around to figure out why my 352 seems to be low on power. I bought my 65 galaxie 500 with the 352 rebuilt. Stock specs with a comp cams 33-222-3 cam. Only other thing different from stock is the .030 over sized piston.  I'm not sure if I'm expecting to much but it just seems like a big slouch. I have the initial timing set at *12 and all in timing is at *38. Compression test showed 125 +- 1 or 2 on all cylinders. I sold my 72 scamp that had a rebuilt 360 magnum in it with 2.76 gears and that car ripped pretty good. Is there something I'm missing here? The galaxie weighs 400 lbs more than the scamp. Seems like that shouldn't make that much of a difference.

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