GL1200 performance mods - Page 2 - Steve Saunders Goldwing Forums

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post #11 of 23 (permalink) Old 08-02-2005, 10:11 PM Thread Starter
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I think one of the reasons it doesn't compute from my perspectiveis due to the fact that the 1200 has the wrong gear ratio to match a modified high rpm engine. The large valve and port engine would run terrible at low rpms and if you used a GL1000 rear gear you'd most likely break it.

The GL1200 has a factory rated 7500 rpm redline and I have spun my own 1200 up and over 8000 rpm on many occasions when I had open pipes.

Maybe you could consider a GL1500 rear gear (same ratio as 1200 but a lot beefier)transplant then look for a supercharger to work on the 1200from Ebay and then you'd have something really exciting that you could easily drive in traffic everyday. And if you added NOX you could smile at crotch rockets at the stoplights.

Vic


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post #12 of 23 (permalink) Old 08-03-2005, 09:24 AM
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Goldwinger1984 wrote:
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I think one of the reasons it doesn't compute from my perspectiveis due to the fact that the 1200 has the wrong gear ratio to match a modified high rpm engine. The large valve and port engine would run terrible at low rpms and if you used a GL1000 rear gear you'd most likely break it.

The GL1200 has a factory rated 7500 rpm redline and I have spun my own 1200 up and over 8000 rpm on many occasions when I had open pipes.

Maybe you could consider a GL1500 rear gear (same ratio as 1200 but a lot beefier)transplant then look for a supercharger to work on the 1200from Ebay and then you'd have something really exciting that you could easily drive in traffic everyday. And if you added NOX you could smile at crotch rockets at the stoplights.

Vic
Thanks Vic! I had overlooked the final drive gear ratio. This is the kind of info I needed. I must think about this for a while before continuing. I'm not interested in tinkering with a blower and/or NOX. If so, it would have been done on my Valkyrie.

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post #13 of 23 (permalink) Old 08-03-2005, 01:40 PM Thread Starter
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In that case maybe what you could do is install a four into one pipe and use an offset key in the cam or crank keyways to change cam timing after you port and polish the 1200 heads. Made a big difference on my Wing when I opened the exhaust ports and ran open exhaust. I have since had to install silencers in the exhaust so that my wife would ride with me. Just the silencers alone took 500 rpm off the redline.

Good luck and enjoy your tinkering and most of all drive safe after you get it all hot rodded up.

Vic


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post #14 of 23 (permalink) Old 08-03-2005, 01:48 PM
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Hi QueXpressand welcome to the forum. If you read the info with the link you supplied you can see that the gl1000 heads were heavily modified (different cams etc) first. Just plonking the heads straight onto the gl1200 is bad news. A guy in Germany did this a few years back and he posted on the GWRRA site about all the grief he had with it. OH is overheating, and the German guy had plenty of that for a start.
Of course I can't find the thread on the GWRRA forum now, its become a black hole over there in latter years with some great information getting lost forever.
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post #15 of 23 (permalink) Old 08-03-2005, 04:22 PM
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Hey Vic, remember the blower setup that was on ebay a while back? It was on a GL1100 if I recall... Don't recall what it sold for, but have you ever seen one in person?

Raymond

1997 GL1500 SE Pearl Sapphire Black
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post #16 of 23 (permalink) Old 08-03-2005, 04:28 PM
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Goldwinger1984 wrote:
Quote:
In that case maybe what you could do is install a four into one pipe and use an offset key in the cam or crank keyways to change cam timing after you port and polish the 1200 heads. Made a big difference on my Wing when I opened the exhaust ports and ran open exhaust. I have since had to install silencers in the exhaust so that my wife would ride with me. Just the silencers alone took 500 rpm off the redline.

Good luck and enjoy your tinkering and most of all drive safe after you get it all hot rodded up.

Vic
Thanks Vic!

I will put this project on hold for the time being. I'll keep you informed.

Note:
I have a similar exhaust set-up on my Valk.
http://hammer.prohosting.com/~schutzrs/packs.htm
It's very nice to be able to add/remove silencers as required at that moment.



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post #17 of 23 (permalink) Old 08-03-2005, 04:30 PM
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DJ wrote:
Quote:
Hi QueXpressand welcome to the forum. If you read the info with the link you supplied you can see that the gl1000 heads were heavily modified (different cams etc) first. Just plonking the heads straight onto the gl1200 is bad news. A guy in Germany did this a few years back and he posted on the GWRRA site about all the grief he had with it. OH is overheating, and the German guy had plenty of that for a start.
Of course I can't find the thread on the GWRRA forum now, its become a black hole over there in latter years with some great information getting lost forever.
Hi DJ!
It sure would have been nice to see that thread! Thanks for the input! It is very appreciated!

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post #18 of 23 (permalink) Old 08-03-2005, 05:05 PM Thread Starter
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Silicon Sam wrote:
Quote:
Hey Vic, remember the blower setup that was on ebay a while back? It was on a GL1100 if I recall... Don't recall what it sold for, but have you ever seen one in person?

Raymond
I've held the Magnussen supercharger in my hands Raymond but I haven't seen an 1100 nor a 1200 with one installed yet.

But, here's a Valkerie with a couple of Magnachargers installed;





I don't think you'd need coffee to wake you up if you drove one of these. LOL.

Vic


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post #19 of 23 (permalink) Old 08-03-2005, 06:29 PM
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Found this too:

http://lamonster.com/

Raymond

1997 GL1500 SE Pearl Sapphire Black
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post #20 of 23 (permalink) Old 08-03-2005, 06:48 PM
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I know many guys in the VRCC club with blowers on their Valkyries. These rides are awesome to say the least.

http://www.visi.com/~spookshow/files/valkblower.jpg


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