Picked up a Honda TRX400 quad with a GS500 motor

[tywhitty]

So i picked up a Honda TRX400 quad that someone had stuffed a Suzuki GS500 motor in. All of the electrical is from the donor GS. First of all, i am trying to figure out the year of the engine. The engine number is M504-113807. Is there a way to figure out the year of the engine from this number? The wiring is a rat nest and i would like to make sure im looking at the right diagram before i attempt to get this thing running. Thanks for any advise .

 

[tom203]

Since this thing has the suzuki electrics, look for the ignitor box- the part number might give you clues to the year.
And don't forget to post pics- this place likes disasters

 

[tywhitty]

Ok thanks, i will check out the ignitor and take a few pics when i get home

 

[tywhitty]

Heres a couple pics

 

[tywhitty]

A couple more pics

 

[tom203]

The ignitor is a about the size of a cigarette pack- unlikely to have heatsink ribs like the regulator/rectifier.

 

[TxGSrider]

It seems to fit pretty good. lol
I've messed with quads for several years now, and its kinda funny to me that you can mod the heck out of a 450cc sport quad to the point where its not really fun to ride (and spend thousands in cams/head/exhaust) and get maybe 60-70hp, or you can find a pretty "mild" street bike motor (2 or 4 cylinder) around the same displacement that starts with nearly that kind of power (and goes way up if you get a late model sport bike motor). In fact Ive seen R6 and R1 motors from totaled street bikes put into $100 quads and are so ridiculously fast that its scary... and still have less than $1500 in the projects.
Good luck with that and have fun on it.. it looks like a great toy.

 

[tywhitty]

Heres my ignitor... not sure how to decipher the numbers yet

 

[tom203]

Heres my ignitor... not sure how to decipher the numbers yet

Me neither, most suzuki ignitors are like 32900-xxxxx on the gs500 model. Check your signal generator setup to make sure it appears stock ( remove little cover lower right side)

 

[tywhitty]

Using the color diagram for a 81 gs550 for reference, i patched up some of the rat nest this morning and managed to get this thing to fire up. Seems to run pretty good- has a little hesitation when revving from idle, but i think i can cure that with a little carb clean and dialing in. I havent got to ride it yet, it doesnt have a chain... but im planning on grabbing one tonite.

 

[hillsy]

Keep us updated - this thing looks like it could be a ton of fun