FXR150 camshaft/head issues

**richban** · 5th May 2010, 08:50

Originally Posted by Damien_Toman

Hi Arronduke. Yes, I'm aiming for higher compression and improving inlet and outlet flow. Leading Edge Cylinder Heads will do the work. Yes, the parts book would be awesome. Could I borrow it for a day? I've tried everywhere to buy a service manual but none are available. I'm on 0274 990 708. Thanks. Damien.

After you get the engine back together I would recommend a trip to the dyno. Its more money but its worth it to get it running nice and safe. Its easy to blow hi compression engines with the wrong air fuel ratios. Gives you piece of mind as well.

**Damien_Toman** · 5th May 2010, 17:15

Yes, that would be very interesting. I've never tested any bike on a dyno. I will look into it as I have other bikes to work on and maybe could do more than one at a dyno session.

**Detlev** · 6th May 2010, 19:35

Hey damien what size valves and springs did you order?

**Damien_Toman** · 7th May 2010, 00:39

In the end I only ordered the +2mm std piston. The current valves (after grinding) and springs hopefully will be OK.

**Damien_Toman** · 10th May 2010, 19:37

The piston kit has been delivered. Can anyone with a manual please provide the standard piston to cylinder bore clearance tolerances? Thanks. Damien.

**bucketracer** · 10th May 2010, 20:27

As a matter of interest I found this..........HP Comparison

NSR 150 SP :39.0 hp @10500rpm ...2 stroke
SUZUKI TXR150R :26.5 hp @ 9,500 RPM
SUZUKI FXR150 :20.0 hp @ 9,900 RPM.
HONDA CBR150R :18.6 hp @ (? RPM)
YAMAHA FZ150i :14.8 hp @ 8,500 RPM
SUZUKI SATRIA/RAIDER R :16.0 hp @ 9,500 RPM
SUZUKI FX125 :13.3 hp @ 10,500 RPM
HONDA CBR125 :13.0 hp @ 10,000 RPM
YAMAHA LC135 :11.3 hp @ 8,500 RPM

I guess that will be HP at the crank, it will be interesting to see what a real world FXR150 dynos at the back wheel.

**richban** · 10th May 2010, 20:45

Originally Posted by bucketracer

it will be interesting to see what a real world FXR150 dynos at the back wheel.

Truck loads. With extra trailer's attached, filled with more. True will be interesting. I plan on putting mine back on the dyno before B.O.B will post the results.

**gatch** · 10th May 2010, 21:45

Originally Posted by richban

Truck loads. With extra trailer's attached, filled with more. True will be interesting. I plan on putting mine back on the dyno before B.O.B will post the results.

No loncin on there I see.....