I have a Trinity Racing 330 big bore motor with a Trinity turbo crank. Needs piston or at least rings and lower rod bearing. Message me with any questions
Post up a picture or two & the price.
for the lt250? what year will it fit?
Trinity made a 330 kit for the LT?
I posted an 87 250 that was for sale on ebay.It had a trinity 330 so I,m assuming they do in fact build one.
Trinity cylinder/head work with an .80 over 69mm piston?? Cause you know 250+80=330.
I've got a big bore something or other 250.
Uses a different piston I think because the bore is so big.
Think I'm going to check and see what the bore measurement is today.
I want to see the bore and stroke measurements. I am doubting the 330cc. I'm going with what Quadster said.
I want to see the bore and stroke measurements. I am doubting the 330cc. I'm going with what Quadster said.
Trinity cylinder/head work with an .80 over 69mm piston?? Cause you know 250+80=330.
Piston is 73.95 mm bore is 74 mm not sure on stroke I was told it was a 330 if you call trinity they will tell you that they use to do a 330 for the lt250r. it may be only 295 cc i'll try to find out the stroke when I get time and put up some pictures.
Just measured mine and it's at 74.2mm (hard to get a good measurement from a cylinder that had a seized piston)...can't find piston anywhere.
No idea how to accurately measure stroke while crank is inside case, but there is a spacer under cylinder.
Cylinder is engraved with LRD, definitely ported, no measurements engraved anywhere, only serial numbers and re-sleeved noted under intake.
Bonus...just realized the head has been O-ringed LOL
They offered 330 when I had my 290 built.
It must be made up for the cc in the rods.The piston in the picture is 67.50mm so it only bored .20 over.
you do see the huge gap between the piston and the sidewall dont you? looks like a screwdriver is even in there.
Whats the spacer plates thickness?
No my bad i didnt see it.
Fooled me too.
Sleeve looks AWFUL thin...
Anyway. 74mm piston+76.7mm stroke=329.87cc. Or more likely, 74mm piston+76mm stroke=326.86cc, so +7mm bore, and +6mm stroke. Methinks the piston would freeport, unless it was a longer piston, then it would only hit the crank at BDC, so a longer rod is needed, which would need a spacer plate, unless the piston is designed for it. Know what I mean?
Also, ouch on the head stay mount.
Too bad ESR never made a big bore aftermarket cylinders for the LT250
Well I know ESR makes a 330 & a 370 kit for the Hondas.
On the 370 kit you have to have the cases ported.
i think esr even makes something bigger than those, well it had to be when i got beat by one on my bird.
Duncan was the only one I know of to offer a cylinder for the LT250R.
Too bad ESR never made a big bore aftermarket cylinders for the LT250
Too bad the bottom end wouldn't hold up to that kind of punishment.
From what I've read, they barely hold up to the 270HRD.
J/k 