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-   -   91 cr500/ 07 crf450 build to Cr 500AF (http://www.allthingsmoto.com/forums/f-235/91-cr500-07-crf450-build-cr-500af-64826/)

Sponge500 04-18-2015 09:55 PM

91 cr500/ 07 crf450 build to Cr 500AF
 
Hey guys,...I've started to tear into things. I'm fairly well stocked with parts and work on the build when I head to my parents once every 4-6 weeks or so. This thread will be a slow one,....but I thought i'd start posting pics in case anyone wants to check things out....

---------- Post added at 08:37 PM ---------- Previous post was at 08:36 PM ----------

Original steelie,... [IMG]http://i586.photobucket.com/albums/s...treet/_572.jpg[/IMG]

---------- Post added at 08:41 PM ---------- Previous post was at 08:37 PM ----------

Mike over at M-Worx did a fantastic job on the conversion aspect f the CRf450 frame,.. He was attentive to each step of the process. Here are some pics of his work,..... If anyone is interested I recommend him. I paid $1200 plus shipping which was $50-60 each way. M-Worx Conversions

[IMG]http://i586.photobucket.com/albums/s...t/IMG_9850.jpg[/IMG]

---------- Post added at 08:41 PM ---------- Previous post was at 08:41 PM ----------

[IMG]http://i586.photobucket.com/albums/s...t/IMG_9851.jpg[/IMG]

---------- Post added at 08:43 PM ---------- Previous post was at 08:41 PM ----------

[IMG]http://i586.photobucket.com/albums/s...t/IMG_9852.jpg[/IMG]

---------- Post added at 08:43 PM ---------- Previous post was at 08:43 PM ----------

[IMG]http://i586.photobucket.com/albums/s...t/IMG_9853.jpg[/IMG]

---------- Post added at 08:44 PM ---------- Previous post was at 08:43 PM ----------

The radiator mods,.... http://i586.photobucket.com/albums/s...t/IMG_9849.jpg

---------- Post added at 08:47 PM ---------- Previous post was at 08:44 PM ----------

Now the motor,... The cylinder was pretty scuffed up in certain parts,..I went to my local shop and discussed options. Basically the cost of boring or resleeving was approaching the cost of a new jug. I ordered a brand new cylinder for $389,..Along with a New Wiseco piston kit,...[IMG]http://i586.photobucket.com/albums/s...t/IMG_9838.jpg[/IMG]

---------- Post added at 08:49 PM ---------- Previous post was at 08:47 PM ----------

The head has a circular scratch I don't particularly like. Do you guys think it will effect performance? Trying to clean it up,..it was pretty black. [IMG]http://i586.photobucket.com/albums/s...t/IMG_9847.jpg[/IMG]

---------- Post added at 08:49 PM ---------- Previous post was at 08:49 PM ----------

Another shot,,... [IMG]http://i586.photobucket.com/albums/s...t/IMG_9846.jpg[/IMG]

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Check out the markings on the cases toward the exhaust side,...any thoughts or suggestions on that?> [IMG]http://i586.photobucket.com/albums/s...t/IMG_9843.jpg[/IMG]

---------- Post added at 08:52 PM ---------- Previous post was at 08:50 PM ----------

Here are a couple shots of the Headstay,..billet block from M worx. [IMG]http://i586.photobucket.com/albums/s...t/IMG_9854.jpg[/IMG]

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[IMG]http://i586.photobucket.com/albums/s...t/IMG_9855.jpg[/IMG]

---------- Post added at 08:55 PM ---------- Previous post was at 08:53 PM ----------

Thats all for now,...I appreciate any thoughts or comments,. Will be splitting the cases next session (first week of May) and beginning low end rebuild. Stay tuned

Tharrell 04-19-2015 05:58 AM

No offense to the site but the real brain trust on this is at bannedcr500riders.
Dogger can probably offer insight from this site.
He's a contributor there also, as am I.

Sponge500 04-19-2015 09:19 AM

Well mostly Dogger and Cowboyana are who ive been speaking to on this project via this site,...so thats why I posted here.

dogger315 04-19-2015 11:49 PM

Looking good, Sponge!

The framework (welds, setup, etc.), looks first class.

You need to clean that head up. The scratches and pits can cause hot spots
that can lead to detonation. You want a nice smooth surface when done.

The flaws on the cases are just from sloppy machine work during production.
They aren't a problem per se, but you can use a dremel and sanding roll to
smooth them out if you want.

Look forward to following along on this build, keep the updates coming.

dogger

cowboyona426 04-20-2015 09:33 AM

Quote:

Originally Posted by Tharrell (Post 722317)
No offense to the site but the real brain trust on this is at bannedcr500riders.
Dogger can probably offer insight from this site.
He's a contributor there also, as am I.

As am I, but what's the harm in sharing his build info here?

Tharrell 04-20-2015 12:07 PM

Quote:

Originally Posted by cowboyona426 (Post 722337)
As am I, but what's the harm in sharing his build info here?

No harm at all. I just directed him to the best 500 site overall, especially for an AF conversion.

Sponge500 04-20-2015 12:47 PM

Ill probably post over there when i get some time. M-Worx deserves to be known in my opinion. A solid option for people looking for an experienced guy to do their conversion.

Dogger what are your recommends on cleaning up that head? I figure I need to send it to someone to get that scratch out of it. No idea what could have caused such a scratch,..it seems like someone was in there before me and tried to use a rough scouring ball or something.

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And again if anyone wants remaining parts off that steelie,...ill take ten bucks over shipping.

dogger315 04-20-2015 02:22 PM

Since I wouldn't want to change the squish, shape or volume of the combustion
chamber, I would send it to a shop that knows what's what and let them clean
it up. I would probably go with Millinneum Technologies and have Eric Gorr do
the work. They are close to you and do excellent work for a fair price. After you
get that done, you might want to have a decompression valve installed. There's
a guy that does that work for $100 the last time I checked. A DC valve will save
your Right side center case from cracking - a very worthwhile mod, IMO.

dogger

Sponge500 04-20-2015 02:31 PM

Dully noted....ill look into that. Thansk Dogger

Sponge

char393 04-20-2015 04:54 PM

I always like following build threads. Someday I hope to do something like this... But probably not a cr500. :D

speedysvetz 04-20-2015 07:21 PM

Quote:

Originally Posted by char393 (Post 722351)
I always like following build threads. Someday I hope to do something like this... But probably not a cr500. :D

Same here! And I love the quotes in you posts I just got around to reading them

cowboyona426 04-21-2015 08:14 AM

Quote:

Originally Posted by char393 (Post 722351)
I always like following build threads. Someday I hope to do something like this... But probably not a cr500. :D

Quote:

Originally Posted by speedysvetz (Post 722354)
Same here! And I love the quotes in you posts I just got around to reading them

You two need to put on some big girl panties, everyone needs at least 1 CR500! :D

Sponge500 04-21-2015 08:33 AM

char ive got those 89 cr500 graphics here sitting on my desk..too preoccupied to mail them to you as of yet,... ill get to it though.

char393 04-21-2015 08:41 AM

No worries G... whenever you get around to it.

Chase... I likes me a little big bore action. I think someday I'd rather build a nice cr125 though.

rm500..
https://fbcdn-sphotos-b-a.akamaihd.n...bdcda8fb8260fd

sorry G... no more thread hijacking, i promise.

cowboyona426 04-21-2015 08:54 AM

Quote:

Originally Posted by char393 (Post 722364)
Chase... I likes me a little big bore action. I think someday I'd rather build a nice cr125 though.

Do the 125 first, then a 500 so you have the trio :D

Look forward to seeing progress photos of the build Sponge!

Sponge500 04-21-2015 09:26 AM

Yea! I just got off the phone with Millenium Tech,...turns out they can fix that head up nice for around $80. Plus glass bead the exterior so it matches the new cylinder better,... Will have more pics in a couple weeks.....

seanmx57 04-23-2015 07:31 PM

Glass beading a motor is fine if you don't plan to run it in dirt. Dirt will get in the pores super easy and make it look like crap and be impossible to keep looking good.

VHT silver caliper paint leaves it looking like new but prepping it with glass bead is not what's been recommended to me. Just clean the surface and maybe rough it up slighty for good adhesion. The only thing that sucks about VHT is you need to bake the parts in the oven at 200F for an hour. I had to do some voodoo tricks to get a whole motor in the oven!

Sponge500 04-24-2015 07:52 PM

OK thats a thought,....any further thoughts on sprucing up the aged look of the top of the cylinder head? I figured glass bead was the common technique for this just based on reading.

dogger315 04-25-2015 10:37 AM

Sean's talking about the anodized bits like the center cases and Right side
case cover. If you glass bead blast those, you'll strip the anodization and
open up the castings for staining. Honda paints the Right side case cover
and if you are running a Black engine, the center cases as well. Glass bead
is best for cleaning up the cylinder and cylinder head which are bare castings
to start with.

If you want to run the newer Silver look and need to clean up your center cases,
try soda or an ultrasonic parts washer. I have a powder match for the Right
side case cover if you're interested.

dogger

Sponge500 04-25-2015 11:27 AM

No No,...im keeping it as it was. I already have the black hi temp paint for the cases. Though I may shop around for the covers in a different look ,..ideally this... though this is for a 250 Service Honda Clutch Cover 02 06 CR250 | eBay



Earlier i was speaking on just the Cylinder head. The cylinder will be brand new so i dont want some pristine cylinder and gunky cylinder head.


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