Finished...1988 CR250R

Sofiedog
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Sofiedog
Edited Date/Time 4/13/2019 10:05am




88 crank was rebuilt by Eric Gorr Racing with a ProX Rod and bearing (Koyo). The Nikasil cylinder was replated by PowerSealUSA. It has a Wiseco piston and rings. New '89 aluminum clutch cover and NOS water pump shaft. All new bearings and seals in chassis and engine.




She's ready to fire up! Can't wait to ride it and tune it up!
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Rocky739
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Indianapolis, IN US
Rocky739 3/27/2019 10:23am
3/27/2019 10:23am
That's a super clean looking bike! Really dig the black fork boots and rims on it!!!
2
Sofiedog
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Sofiedog 3/27/2019 10:53am
3/27/2019 10:53am
Rocky739 wrote:
That's a super clean looking bike! Really dig the black fork boots and rims on it!!!
Thx! I wanted to do this one a bit different...its still an old school looking racer with fork boots, but the black rims make it a bit more contemporary looking...then, it just seemed to me that the black fork boots work with the black rims...in place of the iconic '88 red fork boots. I think it looks more agressive with all the black, than using the red. Easy to swap.
2
wfoskir
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Half Moon Bay, CA US
wfoskir 3/27/2019 1:30pm
3/27/2019 1:30pm
Your bike looks great, you did a good job.
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WODirtCycles 3/27/2019 1:43pm
3/27/2019 1:43pm
Sofiedog wrote:
[img]https://p.vitalmx.com/photos/forums/2019/03/27/334328/s1200_IMG_5521.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/03/27/334329/s1200_IMG_5522.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/03/27/334330/s1200_IMG_5524.jpg[/img] 88 crank was rebuilt by Eric Gorr Racing with a ProX Rod and bearing (Koyo). The Nikasil cylinder was replated by PowerSealUSA. It...




88 crank was rebuilt by Eric Gorr Racing with a ProX Rod and bearing (Koyo). The Nikasil cylinder was replated by PowerSealUSA. It has a Wiseco piston and rings. New '89 aluminum clutch cover and NOS water pump shaft. All new bearings and seals in chassis and engine.




She's ready to fire up! Can't wait to ride it and tune it up!
The bike looks for show only, beautiful... which brand of paint you used for the engine?
3

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Superdave19
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Superdave19 3/27/2019 1:47pm
3/27/2019 1:47pm
I'll take it!
1
sandman768
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sandman768 3/27/2019 2:25pm
3/27/2019 2:25pm
Well done!
1
Sofiedog
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Sofiedog 3/27/2019 8:16pm
3/27/2019 8:16pm
Sofiedog wrote:
[img]https://p.vitalmx.com/photos/forums/2019/03/27/334328/s1200_IMG_5521.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/03/27/334329/s1200_IMG_5522.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/03/27/334330/s1200_IMG_5524.jpg[/img] 88 crank was rebuilt by Eric Gorr Racing with a ProX Rod and bearing (Koyo). The Nikasil cylinder was replated by PowerSealUSA. It...




88 crank was rebuilt by Eric Gorr Racing with a ProX Rod and bearing (Koyo). The Nikasil cylinder was replated by PowerSealUSA. It has a Wiseco piston and rings. New '89 aluminum clutch cover and NOS water pump shaft. All new bearings and seals in chassis and engine.




She's ready to fire up! Can't wait to ride it and tune it up!
WODirtCycles wrote:
The bike looks for show only, beautiful... which brand of paint you used for the engine?
Thx...Its going to be a weekly track bike...probably more modern tracks than Vintage tracks.

The cases are powder coated. The alum finish on the cylinder is the result of the PowerSeal USA cleaning process. The head has a mild (muriatic) acid surface finish. That's OEM finish on the black side cover and silver clutch cover.

3
6bt
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6bt 3/29/2019 5:31pm
3/29/2019 5:31pm
Looks great!!
1
rob.boucher.547 3/31/2019 5:43am
3/31/2019 5:43am
Great Job!
One of my all time favorite bikes I have owned!
1
BogMasterR
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Marysville, WA US
BogMasterR 4/2/2019 9:29pm
4/2/2019 9:29pm
Beautiful build,WOW! I
1
Sofiedog
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Sofiedog 4/3/2019 8:54am
4/3/2019 8:54am
I got her out a bit...just rode her around in a practice area. I'm going to start leaning out the main. Plug is black and wet...spooge around pipe...it has 30 min run time.
I installed the stock 185 main in the stock 38mm PJ carb to start off...going to drop to #180. I'm running 32:1 SuperM and 91 Octane pump gas. The manual says to use a 9 heat range plug.



2
KDXGarage
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KDXGarage 4/12/2019 9:23am
4/12/2019 9:23am
Awesome looking bike! Congratulations on it.
1
Sofiedog
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Sofiedog 4/12/2019 10:45am
4/12/2019 10:45am
getting her jetted and tuned up...she starts a lot of conversations in the pits...and she's been dropped...I built her to ride and she's fun! o ride.
1
Brian_Bowles 4/12/2019 5:09pm
4/12/2019 5:09pm
This is my favorite year bike. Fantastic job!
1
Brian_Bowles 4/12/2019 5:11pm
4/12/2019 5:11pm
What is the story on the older CR behind this one?
sandman768
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sandman768 4/13/2019 6:02am
4/13/2019 6:02am
Well done! If I remember correctly the 88-89”s came with very rich jetting from factory, thinking you will end up in the 175 main range with pump gas, FmF & Pro Circuit still have jetting charts to these old bikes on their sites I believe. Not sure if you already checked but, on some models the spark plug did not thread deep enough into the combustion chamber & caused jetting issues.
1
Sofiedog
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Sofiedog 4/13/2019 8:51am
4/13/2019 8:51am
Brian_Bowles wrote:
What is the story on the older CR behind this one?
That's my '83 CR250R VMX racer...I also have a 480...and a '78 YZ250E.

2
Sofiedog
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Sofiedog 4/13/2019 8:55am
4/13/2019 8:55am
sandman768 wrote:
Well done! If I remember correctly the 88-89”s came with very rich jetting from factory, thinking you will end up in the 175 main range with...
Well done! If I remember correctly the 88-89”s came with very rich jetting from factory, thinking you will end up in the 175 main range with pump gas, FmF & Pro Circuit still have jetting charts to these old bikes on their sites I believe. Not sure if you already checked but, on some models the spark plug did not thread deep enough into the combustion chamber & caused jetting issues.
yep...stock jetting is a #185...it ran on that...then, I went to #180 last week...still rich...trying the #175 today.

I dd not know about the spark plug/head issue.
Brian_Bowles 4/13/2019 10:05am
4/13/2019 10:05am
Brian_Bowles wrote:
What is the story on the older CR behind this one?
Sofiedog wrote:
That's my '83 CR250R VMX racer...I also have a 480...and a '78 YZ250E. [img]https://p.vitalmx.com/photos/forums/2019/04/13/338567/s1200_IMG_5609.jpg[/img]
That's my '83 CR250R VMX racer...I also have a 480...and a '78 YZ250E.

I am speechless! What a collection ?
1

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