Go Back   ADVrider > Bikes > Old's Cool > Airheads
User Name
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old 10-10-2012, 09:30 PM   #1
Bluethumb OP
Gnarly Adventurer
Joined: Aug 2012
Location: Texas Hill Country
Oddometer: 130
Specific questions - 800cc to 1,000 cc

I'm looking to add a set of 1,000 cc cylinders to my R80ST, keeping my original heads and carbs from the R80. From what limited knowledge I have I believe that this is a straight bolt on upgrade. Remove the 800 cc cylinders and pistons and install the 1,000 cc cylinders and pistons. Am I correct on this? Will the 800 cc heads bolt right on? What head gaskets do I order? And do I need to make any changes to the carbs? Different position on the jet needle, different needle jet, etc.

From what I've read, this is the one upgrade that basically gives the most bang for the buck. I believe I'll get a decent boost in torque and h.p., and still be able to run regular gas. I also believe I've read that 800 cc heads and 32 mm carbs bolt on with no problems.

The cylinders and pistons are from a '81 R100RT so I m assuming the pistons are 8.2 to 1.

Am I basically good to go in terms of this being a "bolt on" operation or is it much more involved then that?

Thanks all
Bluethumb is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Display Modes

Posting Rules
You may not post new threads
You may not 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 On

Forum Jump

Times are GMT -7.   It's 08:18 AM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2015