Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 11:03 PM

With the head leaking right next to the water jacket inlet on the head, i think i was over pressurizing the cooling system. I blew half of it out of the rad. When i went to empty the coolant there wasnt much left.

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 10:58 PM

Right side cover is in perfecr shape. Not a bit of oxidation. Turns out that the prvious owner tried to do a helicoil but drilled the hole on an angle. The stud is off center. After i cleaned out the epoxy , i could see threads. I dropped in an M8 coil ... more »

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 4:44 PM

Got it out. Now for the easy out. May the force be with me.

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 4:41 PM

I have an extra cylinder but i cant get a stud out of it. Is there a technique to getting them out? I have and easy out as well.

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 4:18 PM

Ok somthing new. Looks like one of the cylinder head bolts was snapped at sometime and it was somehow epoxied back in place. I need the bike this weekend can i jb weld this back in for temporary use?

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 3:45 PM

Ok. The head gasket was leaking , not bad, but i guess any leak is bad. The gasket is very thin. So i started looking through my box of parts and i found w old gaskets. One is 2 to 3 times thicker material with a metal ring . the other one is made up

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Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/12/2016 10:15 AM

ive been having trouble getting a good seal on my intake boot. i have a compression tester that has been modified to allow me to pump air in through the spark plug hole. i have the exhaust sealed. if i put a plug with a pressure gauge in the intake boot, ... more »

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/11/2016 5:32 AM

thanks guys. i have brand new aluminum radiators, but maybe the silicone hoses are more restrictive than the original. i noticed that the "Y" hose has more of a bend than the original. is there an easy way to tell if your water pump is working properly? ... more »

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/10/2016 8:03 PM

Do you think 162 on the main might be a little lean? I was going to pick up a 168 , 170, 172 and see which one she likes. Also what are you opinions on engine ice? Ive never had a bike get that hot after 4 laps. I am going to use regular coolant this ... more »

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/10/2016 12:31 PM

could an air leak in the power valve cover cause this?

Added reply in a thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/10/2016 12:25 PM

thanks for the suggestions, i would have done the clutch dump , but just as i was downshifting into the corner, the splines on the stock shifter slipped and i went into neutral. because the shifter was now shitting on the bottom of the frame it was stuck ... more »

Started new thread 1987 CR 250 jetting problems/ head gasket leak discovered 8/10/2016 6:14 AM

hey guys, a few weeks ago i finally got my 87 out. she ran amazing for about 4 laps then something strange happened. in a corner she went wide open and the kill switch wouldn't work, so i pulled the plug cap and it didn't shut down. i had to shut off

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This forum thread has 28 replies

Added reply in a thread 1987 honda CR250 coolant drip 7/21/2016 5:46 AM

thanks for the tip on the seals being backwards, i'll be sure to check it out. how can you tell if they are backward?

Added reply in a thread 1987 honda CR250 coolant drip 7/20/2016 5:55 AM

looks like the drip has stopped. just rebuilt the engine, crank ,seals,bearings, top end. possibly the seals just needed a bit of heat and fluid ? thanks for the info. if it starts up again , i'll get that water pump taken apart for inspection.

Added reply in a thread 1987 honda CR250 coolant drip 7/19/2016 6:04 PM

It does not drip when the engine is off.

Added reply in a thread 1987 honda CR250 coolant drip 7/19/2016 6:01 PM

Its the hole in the middle of the picture.

Started new thread 1987 honda CR250 coolant drip 7/19/2016 6:00 PM

Hey guys. Finally started my 87 and lowand behold, there is a small leak. There seems to be a small hole in the case just below the water pump. This hole is on my 86 and 87. I inspected the case before assembly and it was in almost new condition so i

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This forum thread has 9 replies

Added reply in a thread Looking for 87 cr 250 front master cylinder 7/11/2016 6:14 AM

thanks Mike, just sent you a text. curt

Started new thread Looking for 87 cr 250 front master cylinder 7/10/2016 6:01 PM

Anyone have any front brake parts sitting around in a box somewhere? Im in need of the master cylinder and maybe the caliper. I have a brand new braided brake line , so dont need that. 1987 cr 250. Looked around on ebay, but there is lots of crap and ... more »

This forum thread has 3 replies

Added reply in a thread YZ250 piston used in RM250 5/31/2016 7:59 AM

thanks Beamer. this is not the racers choice 808, just a stock yz250 piston. im in a bind to get it up an running for this weekend. other wise i would just order an RM piston. i dont see why the IP8 wouldn't work though. curt