Pin Weight Suggestion?

[brahm]

I'm working on my primary right now, and I originally was going to remove the weights from my stock rollers which I believe would be a pin weight off 10.5, but I am now going to be running a billet head so I'm told I should run a bit higher pin weight but not what amount..I currently have a set of adjustable pin weights 13.8 to 19.6 that I was going to exchange for the 10.5 to 16 gram?

With that said while removing the stock weights to drop it down to 10.5 one of the weights is jammed in one of the stock pins and striped. In light of the billet head should I put in the Team weights @ 13.8 and adjust from there, or order the adjustable 10.5 to 16 weights and start it at 10.5 and adjust it up. I'm guessing the increments would be 10.5 empty, 11.?, 12-13, and 16.0.


Other info running at 8000'+
Trygstad billet head
19t gear
415 Ramps (thinking of switching to the Team 415 ramps, not sure though I may return them I didn't realize I had 415 ramps stock...is it worth it to change them, I believe they are lighter )
Yellow / Almond Spring
Team Tied Secondary
800r 07 151

Thanks
-Brahm

 

[brahm]

winter brew where are you lol ^_^

 

[Dynamo^Joe]

The addition of a head may not increase the peak rated power of an engine. Doing a bunch of testing on an inertia dyno, accelerating a 600 lb drum, it's been observed a substantial gain is between 4700~7650 rpms on an 800R
The midrange rpms of the engine where the "average hp" is increased.

Now when you do part throttle applications like sidehilling or rolling on the throttle to accelerate in technical elements, there is more available torque at your throttle thumbtip to get the sled to do what you want to do.

From experiences going from one calibration to the addition of a head was about 1 gram increase to be able to still accelerate an engine from one rpm up to rated rpms 8150.

1 gram under full throttle is about 200 rpms.
If you have 10.5g with stock engine and now installed a head, you can safely go 11.5g and should go do a full throttle pull and watch the tacho.
What does the tach say? (knowing most needle tachs are `100~150 high then can go for 8300 tach / 8150 actual)
Let the tach tell you what to do.

There are 11g~16g lite pins available on the market.

happy tuning
Joey

 

[brahm]

The addition of a head may not increase the peak rated power of an engine. Doing a bunch of testing on an inertia dyno, accelerating a 600 lb drum, it's been observed a substantial gain is between 4700~7650 rpms on an 800R
The midrange rpms of the engine where the "average hp" is increased.

Now when you do part throttle applications like sidehilling or rolling on the throttle to accelerate in technical elements, there is more available torque at your throttle thumbtip to get the sled to do what you want to do.

From experiences going from one calibration to the addition of a head was about 1 gram increase to be able to still accelerate an engine from one rpm up to rated rpms 8150.

1 gram under full throttle is about 200 rpms.
If you have 10.5g with stock engine and now installed a head, you can safely go 11.5g and should go do a full throttle pull and watch the tacho.
What does the tach say? (knowing most needle tachs are `100~150 high then can go for 8300 tach / 8150 actual)
Let the tach tell you what to do.

There are 11g~16g lite pins available on the market.

happy tuning
Joey

Thanks Joe!

For now I had to put in the empty 13s as the stock ones were jammed, I'll give it a whirl and order up some of the 11-16g pins and switch them out when I get them, btw thanks for all your great threads, and videos on youtube. I'm going to make another post but my fear of primary clutching has not been overcome!

 

[winter brew]

It's going to depend on the TEAM setup....can't say what that new clutch is going to need for weight. I would go with the lighter pins, then you know you will be covered.