GT40 Heads...again

Thanks for everything, great time.

Great time guys. Thanks again for putting up the G/C's Alan.

Hollywood wrote: The wives limiting your time out of the house?

I got that figured out, mines dropping me off and going SHOPPING at the mall til we're done. Don't have to worry about driving home but could be an expensive night out!!!

PLBC wrote: Joel, If I can't give Quinner a ride home are you able to? Smell ya'll later.

That would be no problem if CQ can leave early- I won't be able to stay long, unfortunately.

Good to go. I'll be there between 5-6 depending on traffic .

I'll be there.

10-4 Doc. Many of the mfrs have listed as much as a 3-5cc range when listing the chamber size on a specific head, and then list one single number as either an avg or nominal fig.

Side Note: Personally, and this is just from several engines we have, I'm big on the higher comp in our engines with these favorable power to weigh ratios. I don't know that I'd want 10+:1 comp in a cruiser under a continuously heavy load, but in several we've a$$embled with 10:5 and greater (theoretical/advertised based on piston and head combo of Keith Black KB-116 domed pistons and D0OE-60cc 351 heads) the results seem to speak for themselves with no knock or detonation even with aggressive timing and torque and acceleration is incredible. Not having another explanation, I attribute it to a continuous flow of cool water and thus the ability to maintain optimum engine temp. Elect ign doesn't hurt either I guess in terms of not fouling plugs and other issues a$$ociated with high CR's in vintage autos, esp when driving slow or heating up. Also, many of us use premium fuel when it's available whether it's required or not. Might as well take avantage of it. In essence, I'm not saying go build a 11:1 ski boat engine, but if you're looking at new heads which just might raise your CR to the 10+:1 range, don't worry about it and enjoy the power, if that's what you're after.

We're pulling into Mr.Jbears neighborhood next Tuesday, the 26th, and hopefully towing down our old beater testbed '69 Mustang so that he and whoever can take a fun testimonial mid-50s mph ride. It's the next closest thing to Bill Burgess' nitrous rocket. SS-201 Bill, you out there? I'm also looking forward to planting my butt in jbear's trophy winner. I'm stoked. If you're in the neighborhood, hook up with us please.    

The method I most observed was similar to 79's with the syringe, but a piece of plexigla$$ was/is placed over the top of the chamber with a needle-sized hole drilled in it. This takes care of "bubble" effect.

shot of CC 1.5 oz = 44.3 cc's

so that would be about a 2 oz shot to fill the chambers if they are 59cc

Yes.

level the heads with the chambers facing up. four bolts with nuts and washers on them work well. Just screw down the nut all the way down on the threads then place a washer on top of it then set the heads on top. Now you have jack screws on all four conners to level the head. Get a syringe at the drug store or off your local junky your choice, it will have calibrations on the side in cc's fill it with water, get the air out of it and line it up on one of the marks so that you know what the volume of water is in the syringe, then squirt it in to on chamber slowly, you need to have the plug in and tightened or it will leak. keep adding water too the chamber in smaller incruments as it starts to get to the top of the chamber, when it breaks over the edge of the chamber then you should be able to read on the syringe how much is left subtract that from what you started with and you have the volume in the chamber.

using a small syringe with finer calibrations vs a larger one, so say a 10-20cc syringe filled severals times is going to be more acurate then a 100cc syringe. or a compination off both, using the small one at the end to get a better resultant.

Measuring device = Shot Gla$$
Fluid = Canadian Club

79nautique wrote: Allen for sh*ts and giggles you should cc the chambers on those new heads before you mount them that way you know exactly what it is, no guessing involved that way.

Chris, I'd be glad to do it but the only CC I know anything about is Canadian Club. If you can give me an easy how to I'll give it a try so we can get a real answer to the mystery.

Hollywood wrote: Speaking of Hooters, that blonde's face looks familiar, but the body doesn't. Maybe it's the way she's bending. Am I right Ken?

You are correct (Crystal Lake Hooters) - "Flotation devices"(although you can't really tell in the photo) are a new addition and are fantastic.

I've gotta threadjack my thread back, heads came in today yeehaa. Time to start having some fun.