The Triumph Dolomite Club - Discussion Forum

I have totalled a sprint piston trying to remove a siezed wrist pin to remove a knackered conrod. In short I am b***er.

My options short of making a new piston seem limited.

1)give up
2)low compression tr7 pistons, which will leave badly down on power.
3)hope I can find a tr7 piston uk spec and put some cutouts in it and hope the engine isn't too badly imbalanced.
4)buy a set of UK tr7 pistons and make my own cutouts.

Any suggestions?

Can you not source a sprint piston? I know maybe not new but surely second hand?

lwalton wrote:Can you not source a sprint piston? I know maybe not new but surely second hand?

I've looked, but they are very rare.

How about asking James467 if he's keeping his old ones seen as his replacing them all?

I may have a couple of very good condition Mahle pistons.
I will have a look in the workshop store area, I had seen them there around a year ago when I looked last.

They came from Mike on here, so would be in good nick.

Hobo wrote:I may have a couple of very good condition Mahle pistons.
I will have a look in the workshop store area, I had seen them there around a year ago when I looked last.

They came from Mike on here, so would be in good nick.

Thanks that would be very helpful.

Thanks for all the replies, alas I have work tomorrow so must sign off and get some sleep.

Are they standard size? I have some pistons here, possibly a set...

xvivalve wrote:Are they standard size? I have some pistons here, possibly a set...

Yes standard size.

I kept my STD ones too. I have no intention of re-using them. A couple have wear on the thrust side, I wouldn't describe any as mint but may be serviceable for you.

SprintMWU773V wrote:I kept my STD ones too. I have no intention of re-using them. A couple have wear on the thrust side, I wouldn't describe any as mint but may be serviceable for you.

PM sent

xvivalve wrote:Are they standard size? I have some pistons here, possibly a set...

Hi if you have some available I am definitely interested.