Author Topic: XS400 ( yeah, I know its a Yamaha) (Read 7892 times)

crazypj · « **on:** May 16, 2006, 10:41:56 am »

This is for AARONSXS.
XS400 looks like it will take XS650 liners and GSX1100R pistons, going from 69mm to 78mm bore.
You can do the math as to final cylinder size as I dont remember stroke.
The XS liners and pistons may find a good home in a CB350 (Ohiocaferacer

)
PJ

bill440cars · « **Reply #1 on:** May 16, 2006, 12:25:38 pm »

pj, If XS650 liners and GSX100R pistons wouldl work in a CB350, wonder about
the CB450Ks? Might be a thought. What do you think pj and Greg (ohiocaferacers)?

crazypj · « **Reply #2 on:** May 16, 2006, 03:14:51 pm »

Hi Bill,
The XS650 liners/GSX-R pistons wont fit a CB350, I already tried and posted pictures here somewhere
(Info for crazy engine builders.)
PJ

82CB650SC · « **Reply #3 on:** May 17, 2006, 07:14:35 am »

not to hijack but crazypj you seem to know the yamaha 650. I just picked one up and need to find a good place for info. i went on 650rider.com seemed ok but do you know any other places?
thanks bob

bill440cars · « **Reply #4 on:** May 17, 2006, 07:25:33 am »

Hey Bob, I'm not pj and I'm sure he'll have some more but you could check out

650motorcycles.com and, for parts mikesxs.com

Hope that helps, Later on, Bill

82CB650SC · « **Reply #5 on:** May 17, 2006, 08:22:08 am »

Thanks bill. Have been on 650 motorcycles lot of nice looking bikes on there. picked the bike up on ebay for $300 for my son.
he want to make it look like this when we are done.

bill440cars · « **Reply #6 on:** May 17, 2006, 08:41:13 am »

That is a pretty wicked looking bike, Bob. Good luck with the build.
Later on, Bill

crazypj · « **Reply #7 on:** May 17, 2006, 09:43:37 am »

When I'm not here,
I'm Here,
http://xs650temp.proboards29.com/index.cgi
probably the best site for XS information at present. get parts from Mikes XS or Bob at 650.com
PJ

crazypj · « **Reply #8 on:** May 17, 2006, 10:03:57 am »

Quote from: bill440cars on May 16, 2006, 12:25:38 pm

pj, If XS650 liners and GSX100R pistons wouldl work in a CB350, wonder about
the CB450Ks? Might be a thought. What do you think pj and Greg (ohiocaferacers)?

I havnt been into a CB450/500 for at least 20 yrs so I cant comment. It does sound feasable though as it starts out at 70mm. Got any pictures of cylinder/crankcase/piston with a rule for scale? (I have a couple of honda Hurricane pistons laying about, 82mm

_
PJ

82CB650SC · « **Reply #9 on:** May 17, 2006, 10:37:14 am »

Thanks for the link crazypj

aaronxs400 · « **Reply #10 on:** May 20, 2006, 03:01:06 pm »

crazy...would gsxr750 pistons work? these ones:
GSXR750 1988 - '89 / GSXR750F KATANA 1989 - 97 (19 mm pin) 74mm

the 74mm would bring displacement up to 468...right under the limit for lightweight vintage superbike in AHRMA...hmmmmmmmmm

crazypj · « **Reply #11 on:** May 21, 2006, 08:14:58 am »

Dont have any 750 pistons to measure, they may go in with just a bore. what is the crown height? (centre of pin to flat top of piston)
Pin diameter is irrelevant, you can bush rod or fit different pins with caps to get what you want/need
I'll have a look around for 74/75mm pistons ( will 75mm be too big? IE, over 500cc)

PJ

crazypj · « **Reply #12 on:** May 21, 2006, 04:57:30 pm »

Suzuki GS 500 twin, 74mm, very low dome could be altered to fit XS combustion chamber. 18mm pin, 26mm crown height. Doesnt look like it will go into standard liners, they would end up about thick 1.5mm at spigot.

aaronxs400 · « **Reply #13 on:** May 22, 2006, 06:19:17 pm »

still run the gsxr liners

crazypj · « **Reply #14 on:** May 23, 2006, 10:27:31 am »

If you have GSX-R 750 parts already it makes sense to use them. (like, anytime you do this stuf its sensible?

)
Heat up cylinders until liners fall out (use oven) you can measure block for fitting tolerance or use 0.003" interference fit (hole 0.003" smaller than liner OD.) Check the length is about the same (if its longer=good, you can shorten liners, more than 1/8" shorter=bad, piston sticks out the bottom and causes excess friction/rocking)
PJ

dusterdude · « **Reply #15 on:** May 23, 2006, 12:32:01 pm »

damn this is cool.

crazypj · « **Reply #16 on:** May 24, 2006, 12:33:43 am »

dusterdude,
I'm a people person, particularly when I'm fixing their engines

Its all just bits of metal with dead dinosaur's making it go (unless your upmarket and use dead cow for seats)
I like to make big(ger), high precision holes in stuff

Bikes don't care what names are on them or their components.
Its all fun

( I think I should do his for money?)
PJ

dusterdude · « **Reply #17 on:** May 24, 2006, 08:19:41 am »

o yea,i love this take something from this engine and put it in another engine stuff.i dont believe that we neccesarily need to use honda parts to overbore our engines.

bill440cars · « **Reply #18 on:** May 24, 2006, 09:03:11 am »

Quote from: dusterdude on May 24, 2006, 08:19:41 am

o yea,i love this take something from this engine and put it in another engine stuff.i don't believe that we necessarily need to use honda parts to overbore our engines.

I hear ya duster but, a person might oughta keep track of what other parts they use.
If you had to replace or rebuild an off brand part, it'd be nice to know what the part came off
of. I know a guy who had a CJ5 Jeep that the only things that were original was the body and
frame. Everything else was from varioius vehicle brands and he keep a log (or whatever. you
want to call it). Might be something to think about, if a person went very far with this. I might
just do this myself.

Later on, Bill

dusterdude · « **Reply #19 on:** May 24, 2006, 11:32:22 am »

o yea,fer sure.

crazypj · « **Reply #20 on:** June 13, 2006, 11:29:57 am »

Quote from: aaronxs400 on May 20, 2006, 03:01:06 pm

crazy...would gsxr750 pistons work? these ones:
GSXR750 1988 - '89 / GSXR750F KATANA 1989 - 97 (19 mm pin) 74mm

the 74mm would bring displacement up to 468...right under the limit for lightweight vintage superbike in AHRMA...hmmmmmmmmm

Suzuki GS500 is 74mm, and, two valve motor, so it should work as high compression conversion for CB450T. I have a couple of pistons lying about somewhere (or did I fit them to Kawasaki 400 twin?) I'll have a hunt about
PJ

chung · « **Reply #21 on:** June 14, 2006, 08:09:16 pm »

Ahhhhhhhhh............Hotrod stuff

crazypj · « **Reply #22 on:** June 15, 2006, 11:37:50 am »

Hi Chung,
I see you finally made it over here
(seems like we all return to SOHC eventually

)
PJ

aaronxs400 · « **Reply #23 on:** June 21, 2006, 04:15:19 pm »

crazy, how much you charge to do this to my motor? ive got an extra set of cylinders and will get a head. if you can do this for me id be more then willing to pay. you get all the parts, do the labor, and ill make it worth your while

aaronxs400 · « **Reply #24 on:** June 21, 2006, 04:23:37 pm »

hey, one more thing, could you check to see if rd350 or rd400 cylinders will fit...a 4/2 stroke hybrid would be wicked.

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Author Topic: XS400 ( yeah, I know its a Yamaha) (Read 7892 times)