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GT750 Custom Project - Alternative Radiators?

Posted: Sun Dec 07, 2014 8:24 am
by RING_DING
Hello everyone,
I've been out of touch for a while, but have now got a hybrid project underway. I am mounting a GT750 motor into a 1994 Yamaha FZR1000 frame. The stock radiator will require modification to fit so I was wondering if anyone had any info to share on using alternative radiators?
Thanks!

Re: GT750 Custom Project - Alternative Radiators?

Posted: Sun Dec 07, 2014 11:14 am
by tz375
Way to go Roy. :up:

Where do we go to see pictures of the project? I was given an early FZR1000 frame and swingarm a couple of years ago and that is very narrow right where I need to put the carbs. Then I bought an RF600R frame and although it looked sort of OK, it was never going to work. Maybe I need to dig that frame out again and see if I can reposition the motor to make it work.

In terms of radiator, I would imagine that almost any modern rad should work. Start with a CBR600F2/3. They were fairly shallow and not too wide. What about the Fizzer rad? It is fairly shallow and should clear the pipes.

Re: GT750 Custom Project - Alternative Radiators?

Posted: Sun Dec 07, 2014 12:53 pm
by RING_DING
Richard, thanks for the tip. I didn't get the radiator with the FZR as it was a rolling chassis left over from a Bimota restoration. I was a bit concerned with flow rate using a more modern rad, particularly as the hoses are a lot smaller, but I have no expertise in this area! All advice much appreciated.

I can't post any pics here any more so I will probably start a build thread on 2-Stroke World. I will post a link here for anyone interested.

Re: GT750 Custom Project - Alternative Radiators?

Posted: Sun Dec 07, 2014 6:13 pm
by RING_DING
Here's the link to the build thread:
http://www.2strokeworld.com/forum/index ... ic=25905.0" onclick="window.open(this.href);return false;

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 10:21 am
by tz375
That frame looks like it has way more carb clearance than the earlier frames.

I may have to drag mine out of storage and try mounting the motor on the lower bolt and see if that gives me enough space. Nice project BTW.

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 3:05 pm
by Suzukidave
RING_DING wrote: I can't post any pics here any more
Posting pictures is easy if you have a server or use a photo hosting site like Photo Bucket . Just like always when responding click on the reply .. up comes the reply form to add your message , if you want to add a picture or just post a picture get the URL of the picture from the hosting site then just above the reply form there is a rectangle box with img in it . Click on this box and it will put a symbol on the reply form with a flashing line in the middle . Left click on the flashing line and then right click and paste the URL of your picture . When you click the Submit your picture is posted , try and keep the pictures reasonable size for easy loading on slow computer systems .

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 3:09 pm
by Suzukidave
RING_DING wrote:Here's the link to the build thread:
http://www.2strokeworld.com/forum/index ... ic=25905.0" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
I guess you have to be a member as i went to the site and do not see any pictures :(

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 3:17 pm
by RING_DING
SuzukiDave, thanks for the guidance. Right now I am not using a photo hosting site. And I guess you do have to be a member on 2SW to see the pics. It's actually a great forum, but it's mainly Yamaha RDs.
By the way, what is that frame in your Avatar? Looks very similar to the FZR I am using.

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 5:20 pm
by Suzukidave
Photo Bucket is free and pretty easy to use , below each picture you add there will be several links including the URL link that you can copy and then paste to the list . The frame i adapted for the GT engine is a 99 GSXR 750 frame viewtopic.php?f=21&t=10396" onclick="window.open(this.href);return false;

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 6:38 pm
by RING_DING
Thanks SuzukiDave! I was browsing your build thread and interested in the motor cradle you made. The top attachment points looks very similar to what I am dealing with. Did you make it out of steel tubing? Also what is that radiator off? Thanks!

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 7:15 pm
by Suzukidave
I made the engine cradle out of a untitled frame that i picked up at the junk yard and then the cross piece out of steel pipe . The radiator is off a Suzuki TL1000 .. it was all i could find that would fit under the steering head and above the pipes .

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 8:45 pm
by RING_DING
I'm guessing that it is the top (curved) rad from the TL1000? Do you find it cools adequately?

Re: GT750 Custom Project - Alternative Radiators?

Posted: Mon Dec 08, 2014 8:49 pm
by Suzukidave
Yep .. the top radiator , sorry .. I havent put the bike together enough to start it yet but it is a pretty fair sized radiator .

Re: GT750 Custom Project - Alternative Radiators?

Posted: Wed Dec 10, 2014 9:42 pm
by Suzukidave
If you could send me a picture i will post it here for you :up:

Re: GT750 Custom Project - Alternative Radiators?

Posted: Sun Feb 15, 2015 7:00 am
by RING_DING
Testing to to see if I can get a pic on here from Flickr. SuzukiDave I followed your instructions but all I get is this:
Image
What am I doing wrong?