Will Gen1 Head fit/work on Gen 2 engine? - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 2 Old 06-19-2017, 10:16 AM Thread Starter
Join Date: Mar 2017
Posts: 6
Will Gen1 Head fit/work on Gen 2 engine?

Will Gen 1 cylinder head direct fit onto a Gen 2 engine?
Or modifications required?
TallTex is offline  
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post #2 of 2 Old 06-19-2017, 12:50 PM
Join Date: Nov 2009
Location: Lander, Wyoming
Posts: 6,240
Yes it will.
You will need to remove the complete exhaust Air Injection System (AIS) from your Gen 2 (Gen1 head doesn't have the air port, by the spark plug) and cap the vacuum nipple on your Gen2 carburetor.
The Gen 1 cylinder head needs to come with the original 4 Matching camshaft bearing caps and need to be smooth, undamaged surfaces. RH exhaust is the 1st bearing to fail, as you may already understand.

Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
pdwestman is offline  
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