1380 CC 8v motor kits? Magical exhausts? 8v Grisos w/o oil coolers?

[guzzisteve]

If he doesn't balance the crank then he must be skimming weight off pistons if he uses the same rods. 
Pics of a supercharger on the other forum.

[pauldaytona]

If he doesn't balance the crank then he must be skimming weight off pistons if he uses the same rods. 
Pics of a supercharger on the other forum.

 I know Pete looked into that and found it not the way to do it.

[pete roper]

There is a 37g difference in weight between the 1200 and 1400 pistons. Unless you rebalance the crank it will sap power and make the engine vibrate like a cheap sex aid. IMHO there is no way to remove 37g of metal safely from the pistons.

I can guess what they've done to the barrels, it's why the pic shows them upside down. If they are using some different camshafts and valve springs plus a fair bit of head work they can probably drag a bit more out of 1400cc's but I still disbelieve 140, apart from anything else because of the other componentry used in the bike.

Pete

[pauldaytona]

There is a 37g difference in weight between the 1200 and 1400 pistons. Unless you rebalance the crank it will sap power and make the engine vibrate like a cheap sex aid. IMHO there is no way to remove 37g of metal safely from the pistons.

I can guess what they've done to the barrels, it's why the pic shows them upside down. If they are using some different camshafts and valve springs plus a fair bit of head work they can probably drag a bit more out of 1400cc's but I still disbelieve 140, apart from anything else because of the other componentry used in the bike.

Pete

 This was a swap in one day, just cilindrs pistons, no head work.
top view

[beetle]

Only changes are the barrels and pistons? And they use stock parts? Rubbish! It would vibrate itself to bits. No other changes? No head work? No fancy cams? 140HP & 148Nm (109 ft-lbs)? Complete  Rubbish!

[LowRyter]

You'll have to provide the crow 

 Is that 140 NM at peak , W/O doing the math , isn't that about 102 HP at 8K RPM's ?

 Dusty

I'll take the catfish.  And those Delrod dogs smothered in onions.

[pete roper]

This was a swap in one day, just cilindrs pistons, no head work.
top view

Well Paul, if that is all they've done I'd run a bloody mile! The cooling circuit is now blocked. The cooling oil will be venting straight into the timing chest through the OPRV. Used in anger, or even mild annoyance for any length of time I'd expect a spectacular valve or head casting/seat failure.

Pete

[Huzo]

There is a 37g difference in weight between the 1200 and 1400 pistons. Unless you rebalance the crank it will sap power and make the engine vibrate like a cheap sex aid. IMHO there is no way to remove 37g of metal safely from the pistons.

I can guess what they've done to the barrels, it's why the pic shows them upside down. If they are using some different camshafts and valve springs plus a fair bit of head work they can probably drag a bit more out of 1400cc's but I still disbelieve 140, apart from anything else because of the other componentry used in the bike.

Pete

Just to clarify..
By "vibrate like a cheap sex aid" are we to assume not at all, or to the point of discomfort...
(Unaccustomed as I am of course.... )

[Huzo]

You'll have to provide the crow 

 Is that 140 NM at peak , W/O doing the math , isn't that about 102 HP at 8K RPM's ?

 Dusty

It all becomes a bit hard to swallow if you apply the numbers claimed.
<br /
140 Nm x 8,000/9.5488= 117,292 Watts
Or
117.292 KW/0.746 = 157 Hp.....
Now of course if that peak torque was claimed @ 6,000 RPM, then the peak power comes to 117 odd Hp.

[pauldaytona]

Pete something has been done for the oil return.

[pete roper]

Thank you!

The output figures are still pure bullshit.

Pete