Author Topic: 93' gsxr complete front end for 74 750 (Read 3403 times)

Tews19 · « **on:** November 24, 2012, 05:25:53 PM »

I've seen a few threads with more "newer" Gsxr front end but have a chance to get a complete set up from a '93. Is this pretty much the same modern front end swap as a newer set up? Also I can get the complete front end for around 300 without controls. Good set up and buy for a '74 750?

Stev-o · « **Reply #1 on:** November 24, 2012, 05:34:41 PM »

Why would you want it? Planning on tracking it at Road America?!
(been there, that would be fun)

Retro Rocket · « **Reply #2 on:** November 25, 2012, 03:32:03 AM »

If your doing it just because everyone else is then i wouldn't do it... What reason are you wanting to do it..?

Tews19 · « **Reply #3 on:** November 25, 2012, 04:49:13 AM »

I have the 74 750 I recently bought. I got that cause the guy had a spare set of 4-4 341s I planned to put on my K1. After looking at the 74 it's more of a bitsa. Dohc rear wheel, not sure which swing arm it has on it, wiring is hacked but all functional. I wanted to make it handle better and have this one be a modded bike. I have my gold K1 which is all original minus the 341s. Plus it's winter, I need something to do. Goldie is in tip top shape. Now on to this one. But the good thing is I have a spare correct rear wheel And a box of original parts. Thinking bout it, even the hand controls are from a later dohc.

Stev-o · « **Reply #4 on:** November 25, 2012, 07:17:41 AM »

If you are looking for a project, why not replace all the non-SOHC parts?
At least that would increase the value.

Retro Rocket · « **Reply #5 on:** November 25, 2012, 01:36:41 PM »

Quote from: Tews19 on November 25, 2012, 04:49:13 AM

I have the 74 750 I recently bought. I got that cause the guy had a spare set of 4-4 341s I planned to put on my K1. After looking at the 74 it's more of a bitsa. Dohc rear wheel, not sure which swing arm it has on it, wiring is hacked but all functional. I wanted to make it handle better and have this one be a modded bike. I have my gold K1 which is all original minus the 341s. Plus it's winter, I need something to do. Goldie is in tip top shape. Now on to this one. But the good thing is I have a spare correct rear wheel And a box of original parts. Thinking bout it, even the hand controls are from a later dohc.

If better handling is what you want you may be better off with a GL1000 front with cartridge emulators and good springs and preload adjusters. The GSXR conversions require a lot of work if you specifically want it for handling. Things that need to be done, Find which GSXR has close to the correct length forks, you then need to think about how and what wheels you want to run because nothing Honda fits the front forks, the triple clamps are the wrong offset so new clamps will be needed {custom made} to keep trail where it should be, then the brakes need to be sorted, you may need a custom front hub as well, and steering stem needs to be changed , so it's actually a complicated conversion and can be costly.

Tews19 · « **Reply #6 on:** November 25, 2012, 03:04:50 PM »

Thanks for all the input... I put on a set of clean carbs and got the bike running really well. Changed the fuel lines as well. But then noticed the clutch cable needs to be replaced... Then I lost power... Fresh battery in from my Gold K1 to see hwo she ran and nothing... No power......

I took a peak at the wiring harness and should have known the hack job was just that.....Now I need to look for a new wire harness for the 74..

front end swap will have to wait.

shinyribs · « **Reply #7 on:** November 26, 2012, 12:16:49 AM »

Why swap? I think the question is 'why not'?

-Improved braking stock-Aftermarket goodies available for modern stuff-even better!
-Option for lightweight radial tires
-Adjustable valving in the modern forks

You would spend more going with emulators than you could swap a modern front end on for.

IMO opinion that sounds like a high price. I picked up a '02 GXSR front end(both yokes,legs,axle,steering stabilizer) for $140. A stem swap will have it on in a day and you have the bolt-on option for awesome brakes. Downside,these front ends' stock wheels are 17''ers which will put the front of your bike in the weeds.At least with my front end. The one your looking at may have longer legs. An '02 GXSR front end using stock CB wheels will provide 1-1.5'' drop in ride height.

The offset issue in the clamps is not as big a deal as it sounds. With the "02 front ends negative offset( compared to stock CB) it increases the trail from 3.75''-ish (stock) to 4.5''-ish. Increased trail will give slower steering,but not lazy. IMO the stock CB steering is a little twitchy and I welcome the increased trail.Adjustable compression and rebound just sweeten the deal even further.

There are a few pics in my build thread about the swap. Super easy to do! If you want anymore pics or info,just shout,I'll be glad to help in any way I can

If its what you really want...go for it! Don't look back

Retro Rocket · « **Reply #8 on:** November 26, 2012, 12:33:56 AM »

Quote

You would spend more going with emulators than you could swap a modern front end on for.

You couldn't be more wrong Shiny, emulators and preload adjusters are far cheaper than custom trees and hubs, i'm doing 2 of these conversions PROPERLY and i can guarantee you the emulators and preload adjusters are far simpler to fit and lots cheaper than the other custom parts mentioned, we are talking PROPER handling here, retaining the correct geometry of the original bike, not just bolting stuff on and hoping for the best, it doesn't work like that....

shinyribs · « **Reply #9 on:** November 26, 2012, 06:26:00 AM »

Mmmmmmmkay. Depends on your tools / skill level I suppose. I'm running a Comstar on the front of my bike so I had to make axle adapters for that. Hub adapters are next to bolt the gixxer rotors to the dinky Lil Honda hub. Those two items plus the steering stem set me back a total of $15 so far.

Custom trees and preserving factory geometry are a matter of personal preference. It wouldn't be right for me to call you wrong on this subject just because you disagree.

Hold on.....you're doing this swap? How do you justify (to yourself, I don't care) doing the swap on two of your own bikes, yet you want to discourage Teas from doing it? That's messed up.

Retro Rocket · « **Reply #10 on:** November 26, 2012, 12:51:07 PM »

Quote

Hold on.....you're doing this swap? How do you justify (to yourself, I don't care) doing the swap on two of your own bikes, yet you want to discourage Teas from doing it? That's messed up.

Not discouraging him at all, just informing him as to what is involved to do it right. Too many guys here just bolt stuff on with no understanding of how a bike is supposed to work correctly suspension wise. Tews said he wanted to improve handling and i supplied some info on whats necessary to achieve that.

Quote

Custom trees and preserving factory geometry are a matter of personal preference.

Not if you want a "good" handling bike, The geometry is like it is for a very good reason, there is a little room to move but not much, if you want good neutral handling the mods i listed are necessary, {as is correct swingarm length and spring rates} Tews wants to improve the handling of his bike, just as I am. Personally i don't care what it costs me to do it right, i've been right into suspension set ups since the early 80's, even back then my old Honda's out handled my mates bikes easily. I have a few mates that started racing back in the 70's and early 80's and a lot of their work was trial and error as we didn't have sources like the internet to make finding critical information easy, we asked lots of questions and tried stuff on our own. I made the assumption, from what Tews wrote, that he wanted a nice tight handling bike for the street so thats why i responded, I on the other hand could race my bike knowing that everything is sorted well and will work as I want it too....

{ I wasn't having a go at you i'm just a bit anal about suspension and doing things right

}

shinyribs · « **Reply #11 on:** November 26, 2012, 01:21:43 PM »

Gotcha man. Likewise, I wasn't having a go at you either. For sake of arguement we'll call your way, with offset trees, the "right "way. I was just wanting to show it could be swapped over in a very cost effective manner if ride comfort and improved braking is what someone would be after. Truth be told I personally believe that's all you'll ever get out of a swap like this. Modern forks designed to function on Bike A will never perform the same as Bike A forks mounted to Bike B specs. There's just so many other factors involved.

Stev-o · « **Reply #12 on:** November 26, 2012, 05:36:55 PM »

I'm not against swapping, just think there are other things where Tews moneybwould be better spent. Turns out, maybe a wiring harness?

Retro Rocket · « **Reply #13 on:** November 26, 2012, 06:22:57 PM »

Quote from: shinyribs on November 26, 2012, 01:21:43 PM

Gotcha man. Likewise, I wasn't having a go at you either. For sake of arguement we'll call your way, with offset trees, the "right "way. I was just wanting to show it could be swapped over in a very cost effective manner if ride comfort and improved braking is what someone would be after. Truth be told I personally believe that's all you'll ever get out of a swap like this. Modern forks designed to function on Bike A will never perform the same as Bike A forks mounted to Bike B specs. There's just so many other factors involved.

Yep, like spring rates and ride height and so on, its good fun sorting it all out and its actually quite involved, i'm a glutten for punishment so onward and upward... Dave500 is getting the sh1ts withe me because i take so long to get things done, he says i'm too fussy....