Finding parts and head mods - Triumph675.Net Forums
General 675 discussion Anything related to the Triumph 675 model(s), and miscellaneous motorcycle talk.

 
Thread Tools Display Modes
post #1 of 3 Old 01-14-20, 12:19 Thread Starter
woodsracer
Junior Member
 
woodsracer's Avatar
 
Join Date: Aug 2018
Location: Espanola
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to woodsracer
Finding parts and head mods

I will be working with a 2012 motor, I should receive it tomorrow. Have been looking for some race parts, I know the Triumph kit parts are no longer made but is there anywhere I can look to find some things like cams and a detent wheel? Are there any aftermarket options for the detent wheels? Head gaskets? I was able to find one 0.60mm gasket from a builder who had it laying around but that's the only luck I've had.


I was told by second 675 builder it is safe to skim 0.013" off the head. I have not received the motor yet and have not measured the squish or piston to valve clearances but he seemed to think the heads are conservative enough from the factory to use the thinner gasket and take 0.013" off without worrying about the clearances. The first guy I talked to said hypothetically if you use the 0.1mm thinner gasket and take off 0.010" off the head there would be no piston to valve clearance issues and it would retard the cam timing exactly 1.25 degrees. He said he would not worry about adjusting the cams for this.



My question is whether these offhand comments are consistent with what you guys know of these engines. If I were to measure the squish and piston to valve clearances to make sure, what clearances are acceptable anyway? If I were to just skim the head, use the gasket and not measure the clearances or adjust the cams, is this really safe? I'm not worried about a few horsepower when I tune it but if there is a significant amount of improvement i can make by taking more off the head and degreeing the cams I will want to do that. The problem is I don't know what squish and PTV clearances are acceptable, or what degrees to set the cams to. Easy sounds good but I don't want to hold the power back more then necessary.
woodsracer is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 01-20-20, 15:54 Thread Starter
woodsracer
Junior Member
Threadstarter Threadstarter
 
woodsracer's Avatar
 
Join Date: Aug 2018
Location: Espanola
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to woodsracer
Bump.


Over 70 views and nothing guys?
woodsracer is offline  
post #3 of 3 Old 01-20-20, 19:39
Expatbrit
Junior Member
 
Join Date: Oct 2016
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by woodsracer View Post
Bump.


Over 70 views and nothing guys?


I admire you doing horsepower work for Sandia :).
Expatbrit is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Triumph675.Net Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode


Forum Jump

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome