I believe that the oil control ring below the pin is an older design that really is not desired. I also agree with Frank in that your compression is going to be a little high for street use. I would
I have run Flat tops on a 1275 in a Morris Minor I built several years ago.... Yeah I am a weirdo... but how many folks you know want to Race on Salt? anyway.. there are several disadvantages of 11.5
And it really stinks up your garage when you get a few gallons from work and run it in your shop kerosene heater....um, I heard. Never in abuse of your tax dollars, Ron
a bit of combustion chamber grinding ala Vizard would be able to compensate for the raised CR of the flat-tops with a larger chamber volume would it not? DV does mention the 'oil ring under gudgeon
I've checked some old Special Tuning catalogs. Flat top pistons 20 over on a 1275 will give 12:1 compression, plus Barry's head has been skimmed which will raise the CR some more. I've had pop-ups in
I always called that Voluteer Fuel... you know the Fuel that volunteered to jump into your can and then in the back of your truck.... (not that I would know of course) Waste fuel from a fleet of Heli
If you are considering putting new rings in old bores, DON'T! Have the cylinders checked for taper. If you have inside mic's, check top, center and bottom. Dial indicator works well. Consult your ma
I just got the head back from the machince shop ($275). He welded the cracks, put new stem seals, new hardened valves and seats, and planed it. I put it back on and still produces a very unhealthy cl
Barry, I assume that you are on a budget. I would do as you say, but also change the rod brgs. and you'll have to hone the cylinders for teh new rings. You an do this easily with a hone on an electri
I got my AE .020 over set from British Parts NW (503-864-2001)for $130 (pistons and rings). Rings alone would be cheap, but you'll kick yourself later if you have to get back into the bottom end (is
I have some spare 1275 pistons that Barry can have for the cost of shipping if new rings won't solve his compression problems. They're not exact replacements and I'm seeking the collective knowledge
Rick I can not immediatly identify those pistons but flat tops in an everyday driver would really boost the compression. I would not recommend it based on past expierience. My son had flat tops in hi
It would be extremely high compression, but I was going to start running premium (92octane) after my head rebuild. Are there any major disadvantages to the higher compression? TIA, Barry --Original M