Steve Saunders Goldwing Forums - View Single Post - GL1200 performance mods

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post #10 of (permalink) Old 08-02-2005, 09:43 PM
QueXpress
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Join Date: Aug 2005
Location: Montreal, Quebec, , Canada
Year: 2015
Make: Kawasaki Versys 650 ABS
Model: My previous bike was a 2000 Honda Valkyrie
Posts: 12
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Goldwinger1984 wrote:
Quote:
Well done Redwing.

Wow, I can't believe that old post is still around. That was long before I became senior Guru here and long before I thought about building a home made fuel injection system for my GL1200.

Sure brings back a lot of fond memories of this site when I first started out here and it sure is nice to see you welcoming all the new guys onto this terrific site.

QueXpress, you can make anything work on anything you want, but, I personally don't think that the 1000 heads are a good choice for the 1200 as Jason states. Just too much time and expense for the benefits derived unless you truly enjoy tinkering like I do.

Vic
Hi Vic!

QueXpress, you can make anything work on anything you want, but, I personally don't think that the 1000 heads are a good choice for the 1200 as Jason states. Just too much time and expense for the benefits derived unless you truly enjoy tinkering like I do.

I enjoy tinkering on motorcycles as much as I like to ride them. My present bike (Valkyrie 2000 Tourer) has been completely modified. I'm now picking up parts for my next project (GL1200 street custom).
I am thinking of using the heads from a 1975 GL1000 for the following reasons:
- the 1975 GL1000 has the hottest cam (GL1000, GL1100, GL1200)
- the 1975 heads have solid lifters versus hydraulic ones. The redline is between 8500 to 9000 compared to 5500 to 6000 for the GL1200 with hydraulic lifters. This reminds me of the lifter set up on our Valkyries compared to the one on the GL1500.
- The diameter of the intake valves on the 75 GL1000 is 38 mm compared to 36 mm on the GL1200. The exhaust valves are the same for both models.
- The carb venturi on the 75 GL1000 is 32 compared to 30 for the GL1200. I intended on using the 75 GL1000 carbs for a while, and then installing a pair of Weber IDF downdraft carbs (40 or 36).
Other mods will follow but for the time being, I must make sure that I'm not way out in left field with this head swap. If any of the above reasons for making this mod do not compute, please let me know. I tend to believe that this engine would kick ass ... but I could be wrong (It wouldn't be the first time!).

Thanks for the welcoming! It is very appreciated!





I still have a full deck.
I just shuffle slower.
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