460 stroker #2

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thought I would post some info on 460 stroker for those who may want more specific info. I recently found that ex cases are not adequate for big bores some may need modifying ,so measure the out side of the cylinder then check the cases where the cylinder mates up with calipers you need .020

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more pics,the highlighted spot is where I had to take .015 out of the case because its not completely round(looking down at crank which is taped off to keep shaving out of the case

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checking bore (89mm LA sleeve) for round

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another pic, measuring outside to compare to the case opening

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head before install of GT Thunder hd head bolts , the holes have to be opened up a bit for the 2 dowells that fit on the studs

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the other hole. The sleeve actually overlaps the stud holes because of the bigger bore

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here are 2 stroker pistons both are CP 89 mm stroker pistons but the new looking one is actually old stock not made any more but its a flat top and I also got it on sale now I know why.The other is the new type from CP a dome top 11.5-1 with the x web

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I dont do signatures so here is what i have 02 ex 460 stroker CP 10.5-1 flat top
HotCams 4mm stroker crank
LA sleeve 89mm
GT Thunder hd head studs
Cometic gaskets
ported intake and polished exhaust ports
42mm 450r kehin with opened intake boot
Velocity with K&N(no air box)
hot cams stage 3
crf450 timing chain
spal fan
MSD 8mm spark plug wire no resistor
Procom ignition
xr400 clutch case
yoshimura head pipe / exhaust
think that does it not going into all the crap on the quad this is only engine goodies .I do all my mechanic work Kings machine shop did the bore hope this helps there is alot of 460s here but not alot of info about them maybe this will open more discussion

[rcatvrider]

Sounds like you know your stuff, should be a great build.

[flyboy1294]

Sort of an off the wall question, but in some of the pictures it appeared the jug was painted flat black, how did that work out for you?

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Originally posted by flyboy1294
Sort of an off the wall question, but in some of the pictures it appeared the jug was painted flat black, how did that work out for you?

thats high heat paint so far its holding up sunday was the first day i rode it since the build, rode about 10 minutes today felt lean so i pulled the plug and no soot not even tan kinda white so im gonna move my needle up one and see how that looks

[flyboy1294]

Originally posted by togup
thats high heat paint so far its holding up sunday was the first day i rode it since the build, rode about 10 minutes today felt lean so i pulled the plug and no soot not even tan kinda white so im gonna move my needle up one and see how that looks

Alright cool. The reason I'm asking is because I got an appointment for the powdercoater here locally, but he has a two week back up. It'll be my turn sometime this week. I have the bottom end of my engine, so doing the clutch covers should be no problem, but I won't get the jug back from the builder for another week or so. So I might have to paint it black to match.

My only worry is that gas would get on the paint and dissolve it.

what is the jet size are yall running on the pilot and the main ? im using a 06 450er fcr carb. had to cut the top part at the idle setting off so my tank would set down right.

[togup]

225 k 3rd notch on needle mine runs a touch lean .

what did ur carb come off of mine only has one notch im running 150 / 50 my carb came off a 06 450 er honda its the newer 450r honda

[paganmac_10]

Whats the deal with the xr400 clutch??? Are they better?