No Idea ! Haven't touched the bottom end apart from removing the sump, is there any way of identifying or measuring without stripping
i was looking at buy some pistons from omega a while back.. they asked if a set of F3 83.25mm would be any use as they had made a batch recently... maybe they were over sized versions..
Put the piston as far up the bore as it will go. ie TDC It may be proud of the block by a mm or so. Then put the piston to the bottom of it's stroke. ie BDC, and measure how far down it has gone. This will give the stroke of the engine, which is double the crank's throw.
I spend so much time on here, that I have not got time to build the house, so do not need to decorate it!! This thread is called "help please", maybe I should get some professional help myself.
Sounds close enough to the oem 92.8mm std 2.0 engine stroke. Your new 2E block will have the same. Tell your Missus I am managing to reply to your thread and cook haggis, tatties, broccoli, carrots, peas, and make a gravy without lumps at the same time.
I forgot to say I have been drinking a few beers too. Not got to the point the beer goggles are in full effect mind, hopefully I won't need them. You should tell her there are several engines in my living room, better the devil you know.
If the price is right Alan then yeah. 82.25 is the common F3 size, but they could have used anything and had cranks and rods made to suit... we're talking not very limited budgets here remember. Omega are probably doing a batch for classic F3... still big business. They may have odd pin sizes to suit custom rods tho, so would need to watch that.
Prob just under 82.5 Ray to suit the common bore, the piston will be a touch smaller than the bore... sorry, teachin granny...
My concern was about the F3 engine ran V High CR as they were running air restrictors.... I guess by now tho most are running without restrictors and have lowered the CR apprpriately.
Forged crank too They came in 6As at the time. Im sure of that, mine had one Not saying this is a 6A engine of course, more-so that its prob a 6A crank. My 2e of the same era has a cast crank. <Rant> BG
Depends on the piston spec Alan... are they flat top or dished? If flat topped, are they designed for long rods with a thin-ish crown or std rods with thick crowns to allow a bowl. If used with a chambered head a bowl of around 5-10cc will be needed, subject to spec & required c.r.
