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ProCycle's FI Turbo build
https://slantsix.org/forum/viewtopic.php?t=56352		 Page 8 of 25
Author:  Greg Ondayko [ Thu Apr 16, 2015 7:08 am ]
Post subject: 
you may want to smooth the transition from the pump pocket to the gallery feeds.

I had done this here..
http://www.slantsix.org/forum/viewtopic ... c&start=15
You have to scroll down a bit to see the pics.


Greg
Author:  ProCycle [ Thu Apr 16, 2015 7:36 am ]
Post subject: 
Quote:
Make sure you get some stainless o-ring wire. The copper wire provided is absolutely useless for o-ringing a block with.
Yeah, I plan to do that. I've heard both ways not to use the copper or that the copper is fine.

Seems to me it would make a big difference what kind of head gasket was being used in combination with the orings.
Author:  CNC-Dude [ Thu Apr 16, 2015 9:38 am ]
Post subject: 
You can only use a copper head gasket when o-ringing a block, that is the only type that is compatible and designed to be used with o-rings, so there really isn't any other option as far as head gaskets go. Good plan on swapping out the wire.
Author:  ProCycle [ Thu Apr 16, 2015 10:25 am ]
Post subject: 
Quote:
You can only use a copper head gasket when o-ringing a block, that is the only type that is compatible and designed to be used with o-rings, so there really isn't any other option as far as head gaskets go. Good plan on swapping out the wire.
In the diesel forums where I also hang out o-ringed blocks are routinely used with composite gaskets. The wisdom there is to locate the o-ring right at the outer edge of the metal fire ring. Those guys are of course running CRs from 17:1 to 21:1. with boost in the 15-30 range or more.

I think with a composite gasket the copper wire is fine. It can still bite into the gasket. I still plan to use stainless wire but I am going to use it with a composite gasket.
Author:  ProCycle [ Mon Apr 20, 2015 4:47 pm ]
Post subject: 
It's finally coming together enough that I can install a cam stop.
I read about cutting an old main pulley to use as a temporary piece to help locate the timing cover.
Well, I don't have a spare pulley but I did figure out a quick and dirty way to get the cover located correctly around the crank.
Starting with a short piece of 4x4 in the lathe I turned a 1" thick donut that fits snugly on the crank and in the seal pocket.
Image

And of course, turned a bolt into a center punch.
Image

It worked real nice. The seal pocket is centered around the nose of the crank and is held firmly in place.

Image
Author:  ProCycle [ Mon Apr 20, 2015 4:52 pm ]
Post subject: 
After making the punch mark I made a nice clean 1/2" hole in the cover.
I machined a shoulder onto a nut so it presses into the cover.
Image

Nut pressed in. I will tig weld around the inside joint.
Image

Mig welded on the outside. Ready for paint.
Image
Author:  ProCycle [ Mon Apr 20, 2015 6:56 pm ]
Post subject: 
I also cut some grooves in the 'uphill' side of the lifter bores to direct extra oil to the cam lobes.
Believe it or not, I did this very carefully with a Sawzall.
Image
Author:  ProCycle [ Thu Apr 23, 2015 4:36 pm ]
Post subject: 
Checked the ring gaps today. Only had to make very slight adjustments to two of the second rings.
Image
Author:  ProCycle [ Sat Apr 25, 2015 10:30 am ]
Post subject: 
Heat reflective tape applied to the intake plenum...
Image
Author:  Dart270 [ Sat Apr 25, 2015 11:15 am ]
Post subject: 
Love the sawzall grooves.

Tilley in Australia has been using O-rings with the Permaseal/Endurotec head gaskets on his 12:1 350+HP NA 225 for many years. If he is using them, that says enough to me.

Lou
Author:  ProCycle [ Sat Apr 25, 2015 11:35 am ]
Post subject: 
I have a permaseal head gasket. But... the gasket bores are 0.210" bigger diameter than my cylinder bores. I don't really want that 0.105" deep slot all around the chamber. I'm afraid it will be likely to seed detonation. Also, if I put the orings at the edge of the fire rings the grooves will almost run together.

Any recommendations on a different high quality head gasket?
Author:  CNC-Dude [ Sat Apr 25, 2015 8:31 pm ]
Post subject: 
Your best choice has already been recommended.
Author:  ProCycle [ Sat Apr 25, 2015 9:16 pm ]
Post subject: 
Huh? Who recommended what? From where?
Author:  DusterIdiot [ Sat Apr 25, 2015 9:33 pm ]
Post subject:  Yep...
Quote:
Your best choice has already been recommended.
Yes, the permaseal is the top dog if you are going with a head gasket...next lower on the food chain is the victor reinz (good for 12:1 NA engines and no malfunctions), and the for anything that is a stock build or slightly above the fel-pro is fine (about 10:1 would be the limit, I lost one on an 11:1 engine which worked fine after the switch to victor)... if you need more than the permaseal it's O-ring time....
Author:  emsvitil [ Sat Apr 25, 2015 9:47 pm ]
Post subject: 
Quote:
I also cut some grooves in the 'uphill' side of the lifter bores to direct extra oil to the cam lobes.
Believe it or not, I did this very carefully with a Sawzall.
Image


Are you using oil standoffs?


If not, I have an idea..........
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