Head
-
Well here is a photo of the head -
Yea, I know that You need the full package but i will get it eventually.wrote on 31 Jul 2017, 19:53 last edited by@killersbeez Yes mate. Clean head.
What size is the piston on the 4FU?
-
wrote on 31 Jul 2017, 19:56 last edited by
It's standart bore, it is in pristine condition, not oval just the scores.
-
wrote on 31 Jul 2017, 20:11 last edited by
Try and get the 4FU fixed, they are Nicasil plated bores, so yes it's expensive to repair the cylinder wall regardless, but I believe the transfer porting is better than a 3MB.
-
Try and get the 4FU fixed, they are Nicasil plated bores, so yes it's expensive to repair the cylinder wall regardless, but I believe the transfer porting is better than a 3MB.
-
wrote on 1 Aug 2017, 08:49 last edited by
@declan Detonation can cause this, this happens when the fueling isn't set up properly, causing the fuel to ignite before the piston reaches TDC, in other words without the spark plug igniting. This causes masses of problems as the force of the piston going up is met with the force of the explosion. Destroys bearings and pits the head.
A piston failure or debris will also cause pitting. But for tuners it's usually detonation.
-
wrote on 1 Aug 2017, 10:59 last edited by
Are the barrels really plated? Which models is that? Could have sworn than mine was steel lined.
-
Are the barrels really plated? Which models is that? Could have sworn than mine was steel lined.
wrote on 1 Aug 2017, 12:02 last edited by@jens-eskildsen The 4FU's are nikasil plated.
But it's possible someone fitted a steel liner to the bore, since they can be rebored. PJME offer this service.
-
wrote on 1 Aug 2017, 17:24 last edited by
Argh, roger, mine is a different model then, havent actually checked which one tho'
-
wrote on 13 Aug 2017, 10:29 last edited by
Got this in the mail yesterday, pumped to get it on the bike when the domed piston comes. TBH it looks like it hasn't even been run lol