couple more questions

aloha450x · Post by **aloha450x** » January 15th, 2008, 6:11 pm

took the head off and dropped the gasket on the floor. which was is up. waterjacket is dimpled so does it go up or down? also are you guys using the stock throttle cable with your pwk's. also checked the number on the piston. 636m09050 so i guess it's 1.5mm over making it a 90.50 what oversize is this and how many oversizes are there. thanks

ISBB · Post by **ISBB** » January 15th, 2008, 6:38 pm

if its really 1.5 over its time for a new jug..

aloha450x · Post by **aloha450x** » January 15th, 2008, 6:43 pm

shit are you serious? thats the part number on the head of the piston. it was just rebuilt so its super clean. why do you say its time for a new jug? yep just checked with a mic. 90.5 thats inside the jug

ISBB · Post by **ISBB** » January 15th, 2008, 7:52 pm

90.5 is the largest the cylinder can go.. if it looks good inside run it.. but when it comes time for a top end then your gonna need a new cylinder or a new sleeve..

Post by **AlisoBob** » January 15th, 2008, 7:59 pm

ISBB wrote:... your gonna need a new cylinder or a new sleeve..

Or plate it .....

fastkart · Post by **fastkart** » January 15th, 2008, 8:04 pm

If I'm not mistaken, there is 2 more bores... the 636 series of wisecos (or maybe it's pro-x) go in 1/4 mil increments... should be able to get a 90.75 and a 91. Right?

edit: The increments for wiseco is 89.00, 89.25, 89.50, 89.75, 90.00, 90.50, and 91.00

aloha450x · Post by **aloha450x** » January 15th, 2008, 8:14 pm

yeah there is one more size acording to weisco. so when do you know when to go oversize and when do you change your piston?

TJC510 · Post by **TJC510** » January 15th, 2008, 8:16 pm

there is one more bore left, 91mm. they go in .5mm incriments.

ISBB · Post by **ISBB** » January 15th, 2008, 8:24 pm

i was always told 91.5 was the biggest one should go but hey im no motor builder...

aloha450x · Post by **aloha450x** » January 15th, 2008, 8:27 pm

ISBB wrote:i was always told 91.5 was the biggest one should go but hey im no motor builder...

dont you mean 90.5 you guys are like the yoda of cr500's lol

ISBB · Post by **ISBB** » January 15th, 2008, 8:55 pm

sorry 90.5 dislexia at its best..

iggys-amsoil · Post by **iggys-amsoil** » January 15th, 2008, 9:23 pm

fastkart wrote:If I'm not mistaken, there is 2 more bores... the 636 series of wisecos (or maybe it's pro-x) go in .25 mil increments... should be able to get a 90.75 and a 91. Right?

edit: The increments for wiseco is 89.00, 89.25, 89.50, 89.75, 90.00, 90.50, and 91.00

This is the correct answer. However I think there is a 90.25 and 90.75 availible per Wiseco.

And you have to find a good shop to measure the cylinder to piston wall clearance to be sure if its time to bore unless the compression is low. .005 is max.

fastkart · Post by **fastkart** » January 16th, 2008, 8:24 am

Here is a look at the CR500 section in Wiseco's catalog.

Here's their dirtbike catalog... CR500 stuff is at the bottom of page 5.

http://www.wiseco.com/PDFs/Catalogs/CB0 ... leDirt.pdf

aloha450x · Post by **aloha450x** » January 16th, 2008, 8:45 am

what about the head gasket and throttle cable question? also about how much hp can you get out of a naturaly aspriated motor?

fastkart · Post by **fastkart** » January 16th, 2008, 8:47 am

Dimples do go up, tab towards the back. I use an OEM Honda cable with my PWK. As far as power, I think some people are saying 80ish... not 100% sure though.

Post by **AlisoBob** » January 16th, 2008, 8:49 am

At least a 100 hp, easy......

aloha450x · Post by **aloha450x** » January 16th, 2008, 8:54 am

100 hp really? with out no2 and all that jazz. and if 100hp is obtainable then how. other than post and polish, hi comp piston what else

Post by **AlisoBob** » January 16th, 2008, 8:57 am

aloha450x wrote:100 hp really?

aloha450x · Post by **aloha450x** » January 16th, 2008, 8:59 am

haha got jokes. lol

so thats a no i take it damm bob i love and hate you

britincali · Post by **britincali** » January 16th, 2008, 9:00 am

I would say a max of around 65 horse without having to run race gas.

aloha450x · Post by **aloha450x** » January 16th, 2008, 9:02 am

Want about running race gas? Say 100 octane for the street?

britincali · Post by **britincali** » January 16th, 2008, 9:04 am

You dont wanna have to run race gas all the time especially on the street. It gets expensive fast, every time I take the GSS bike out it costs me about $65 for 5 gal with oil.

dannygraves · Post by **dannygraves** » January 16th, 2008, 9:09 am

costs me $30w/ oil cuz the 100 octane is $4.99/gal by my house!

aloha450x · Post by **aloha450x** » January 16th, 2008, 9:17 am

well the price of pump gas is is 3.60 for screw it. I always ran race gas on the street in my 450x. its only a weekend hell raiser. the funny part is that I ride a bicycle to work. haha I guess it 2 wheels. so I will spend stupid amounts on my cr.

ISBB · Post by **ISBB** » January 16th, 2008, 12:21 pm

britincali wrote:You dont wanna have to run race gas all the time especially on the street. It gets expensive fast, every time I take the GSS bike out it costs me about $65 for 5 gal with oil.

where in the hell are you getting your race gas?? im right at 6 bucks a gallon so it costs me half as much! OHh ya forgot to mention the stuff i get is right out of the pump.. if you get it in the can your gettin reamed.

BannedCR500Riders.com

couple more questions

couple more questions