10 replies to this topic

[The Matt]

Right then, I have a 998 A+ that is fitted with an Ultra Light flywheel (well a lightened and balanced one at least).

Will this fit onto my A+ crank?

Furthermore, will my A+ crank fit into the A series block I am getting???

Or is it gonna be a case of getting a decent A series crank for the A series block and then another decent flywheel?

[ed4ran]

I would think that it will fit on the A+ crank (A+ to A+),
but i dont know about the A+ to A (crank to block) :erm:

(oops i havent been any help)

[Jammy]

I'm not certain on this but isn't there something different about the gear that goes on the end of the crank?


*Sits back and waits for a doctor to set him straight*

[The Matt]

hmmm, I need to think about the wallet again, don't erally want to have to buy a new flywheel and crankshaft!!!!! :saywhat:

[Guess-Works.com]

Yes it will all fit... as long as the A series block is a 998..

Cranks are not the same between small bore (998) and big bore (1275)

and the nose of the crank is the same on ALL cranks.

[ed4ran]

I think he wants to put it on the 1400 hes getting. :erm:

[The Matt]

I want to be like GW when I grow up! He knows his onions!

I want to use the flywheel off my 998 A+
plonk it onto my 1275 A+ crankshaft
and slap the lot into a 1400 A series block

So from what GW says, the nose is the same, and the 1275 A+ crank will fit the 1400 A series block. COOLIO!!!!

[Bluemini]

A 998 flywheel will fit any crank, but a 1275 crank in a 1400 engine will need to be stroked unless your going for a 1380.

[Guess-Works.com]

or as I found out a few weeks ago... it's got 74mm bores..

[Sprocket]

a 1400 engine will need to be stroked unless your going for a 1380.

1430 uses the 83mm stroked crank at 74mm bore

And if you can afford the 86mm billet crank 1480cc is poss

[The Matt]

Yeah, as Guessworks says, it has 74mm offset bores, so with a standard stroke crank it should be somewhere in the region of 1400 (1399 or something).

Going to get the block and pistons on Saturday afternoon from Northampton, then I will have more of an idea of what else is needed for the build.

I need to fit the pistons (that have the gudgeons with em) onto my rods too. It's not something I've done before but I have read the guide in FAQ and don't mind having a go!

Got to buy myself a new ring compressor though as the other one seems to have gone walkies! :nugget:

Unless I use the old sheet of tin and big jubilee clips trick that my old boss taught me!

Glad I am OK to use the old flywheel and crank, should be good fun building it all up, just need to buy those transfer gears and a good clutch.