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post #1 of 14 (permalink) Old 01-09-2011, 09:58 PM Thread Starter
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I just ran across this forum today and joined since it looks like a great community. I have a '99 GL1500 and love every minute on it.



What led me here was that I was searching forsources of performance parts for my GL1500.Specifically, I was hoping to find someone who made 4 valve heads to replace the 2 valve ones.



Does anyone know of any manufacturer who makes 4 valve performance heads for the GW? And if there are sources for other performance parts I'd love to get their names too.



Thanks in advace. Really glad to be here!
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post #2 of 14 (permalink) Old 01-09-2011, 10:23 PM
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Welcome to the World's Greatest Goldwing Site aeres707!

As far as I know no one is marketing much in the way of performance parts for Goldwings at least for the six cylinder ones. It would be hard to get much power increase out of the engine without increasing the maximum rpms which might lead to a shorter life span for the slow turning engine. There are some minor things available such as higher flow exhausts and the 'Torqmonster' also 'Torquemaster' pipes are supposed to add a bit of pep. Just click on the highlighted links above.

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post #3 of 14 (permalink) Old 01-10-2011, 05:21 AM
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Welcome to the forum. What younger asking for isn't available. I believe aftermarket camshafts are available for the GL1500, but that's about all.
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post #4 of 14 (permalink) Old 01-10-2011, 07:27 PM
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Sorry Bro ., the 1500-1800 Honda motor was never designed to be hot rodded so parts for this are not available.
They are big understressed motors designed for long life and fool proof maintenance only .
I did see a topic in this forum in the last two weeks where someone put a turbo or something on one and twisted it to 10000 rpm consistantly with no ill efects.?

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post #5 of 14 (permalink) Old 01-10-2011, 07:49 PM
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post #6 of 14 (permalink) Old 01-10-2011, 08:26 PM
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There have been some turbo charged 1800s: Turbo 1800 videos



Here's some more on the subject: Iggy the Biker



I think wehad a radically modified and turbocharged 1500 picture on the forum awhile back but I can't find the picture for some reason.

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post #7 of 14 (permalink) Old 01-16-2011, 02:46 PM Thread Starter
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Thanks so much for the warm welcome!



I'm surprised to hear there isn't anyone making these 4 valve heads. Porsche uses the same engine type for high performance so it wouldn't be out of the question to get 100 hp/liter out of these with the right heads and accessories.



It is clear that there are those willing to spend a lot money on turbos and superchargers for these engines. It seems like having a good set of heads might be popular with those looking to get another 30 and more hp.



I am considering designing a set of high performance GL1500 4 valve heads and cams for myself, and I'd consider selling copies if there is interest. They would be higher compression and could take higher RPMs than stock. And I could have a couple sets of cams that range from mild to wild to suit different tastes.



Do you think there would be interest in this for the GL1500? GL1800?



Thanks again!
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post #8 of 14 (permalink) Old 01-16-2011, 03:15 PM
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Welcome to the forum. I think the reason nobody is making performance heads for the Goldwing is because it is a relatively small market. The small demand wouldn't compensate for the research and expense involved in making them.
Someone in Europe made a 6th gear conversion for the GL1500 years ago and I guess lost their shirts in that idea.
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post #9 of 14 (permalink) Old 01-16-2011, 03:23 PM
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post #10 of 14 (permalink) Old 01-16-2011, 04:13 PM Thread Starter
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Ben, thanks for the cautionary tale.



Not having enough demand is my main concern, of course. However, I do see a lot more interest in making power improvements (turbos, exhaust kits, etc.) than in overdrive kits. And by looking at the number of trikes out there, alot of these owners are willing to spend some serious cash on their 'Wings...



I heard that there are about half a million Goldwings out there so there should be a big enough demand if done right.



Besides, it would be a blast!
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