How much for a 1.5 conversion??

[Insight G40]

Gregg sold his about 2 years ago Hayesey.

[poloeatonm45]

hi if i remember correctly its you who won the pistons and crank the i was bidding for on ebay a while back for this convertion was it not? how come your thinking o selling up mate {just out of intrest}? i would love to buy this convertion from you but im not in a position to at the moment.

steven 

[Richg40]

Ah! Rumbled! I was me that won the parts. The block build will be completely finished tomorrow but i've lost interest in the G completely now and want the space back on my drive and another MTB. Everything I own G related will likely be for sale on here very soon including a very tidy grey shell, gucci engine parts etc etc. I've gotta be honest though the bottom end is pure porno.

[PeteG40]

did you have the crank dynamically balanced? just that the 1w cranks will be factory balanced with different pullies/ancills on than on a g40

[Richg40]

So factory cranks will be balanced with a pulley they wont be sold with that would ideally be as close to round and balanced as everyother pulley available for everyother engine off the parts shelf? No it's not balanced to anything, a pulley, a fly wheel, a clutch etc etc. Crank has not been balance to my alternator, cam or distribution pump. sorry.

[PeteG40]

na diesel cranks (1w) are balanced with the parts they are sold with .  BUt they have different parts  to a py crank - i.e. parts that bolt on the crank. They have a different toothed crank pulley andthe v belt pulley is a bigger affair with a damper attached

[Richg40]

Yes they do have different parts. Front rubber mounted vibration dampers are a common failure and also a weighty rotational mass but I dont remember replacing a crank only in conjunction with, neither notice a diffence in smooth running afterwards? This is off topic. Also know of a quality enhance on a BM which means replacing a front pulley on one engine using one from a completely different engine of a later production type to fix the failing front damper issue and yet no subsequent idle issues?

[PeteG40]

fair enough mate - your call really - or whoever buys your bottom end.

the only 1w i know running has had it balanced and i'll be doing the same on the one i'm building.

[Richg40]

Awesome. So you're blueprinting the entire engine? Having the rods and pistons perfectly weight matched? All ports perfectly gas flowed? Precision machined cam? Cylinder compressions perfectly matched? There has to be a point where the realisation that this is an engine for POLO (!) comes through and blocks out the thought of spending 2 grand on the bottom end. If i'm honest i came so close to spunking 500 rips on a set a H section rods is was unreal, then i blinked real fast for a few seconds and punched myself in the balls. I remember it well, a punch in the balls that had never felt so enlightening before.

[Nick_S]

My bottom end is dynamically balanced stage by stage. Now pistons all weigh the same, rods all weigh the same and then all the other bolted on parts to the crank, balanced one at a time. If I replace my clutch plate due to wear, I only need to balance that and not the whole system again

Its great, engine can tick over happily at 650-700 rpm

[PeteG40]

depends how precision engineered you want it doesn't it. Whether you want it blueprinting, or you are happy with the ends ground off rod bolts.

Rods are good for 300bhp apparently.