Author Topic: Low compression, whats next? (Read 15831 times)

countryboy9799 · « **Reply #30 on:** March 05, 2015, 11:00:08 AM »

I will give Toledo Honda a try, that is where I ordered my water pump off of Ebay. I did end up ordering a crank off Amazon yesterday but I called the 3rd party and made sure the crank was a newer production. They said their stock was out in Nov. and everything was ordered from the factory since then so I should be good. It came in the yellow box which I was told was the better one so I should be good. It was something like $202 so thats even better.

They were only a state away in IA, pretty nice when it comes in 1 day.

rk88r · « **Reply #31 on:** March 05, 2015, 05:01:26 PM »

When you order the main bearings get the '89. They have one more ball.

countryboy9799 · « **Reply #32 on:** March 06, 2015, 11:29:07 AM »

Thanks for the help guys, I will order the 89 bearings. Hopefully I can get that order in before I go to work. I got all the bearings out of the case. The only concern I have is the one in the left side for the Main shaft came out quite easily, I just pulled it out with a needle nose after I heated it slightly. I heated the case with a handheld torch and only went to the point of it being to hot to the touch. With the cases started out 15 degrees to begin with it didnt go to bad.

Back to the left side main shaft, should that bearing be tight like the rest to come out?

Also on the left side those 2 screws that retain the bearing for the counter shaft, that's the one where the shaft comes out for the sprocket. I had to use my tool that you pound on to get the screws out, they must have had some good loctite in because I had to turn it 2 turns with that tool. I am going to replace the screws if they are available.

What kind of loctite should I use for those screws? The blue or red?

Tbone07 · « **Reply #33 on:** March 06, 2015, 12:49:41 PM »

Quote from: countryboy9799;51066

Thanks for the help guys, I will order the 89 bearings. Hopefully I can get that order in before I go to work. I got all the bearings out of the case. The only concern I have is the one in the left side for the Main shaft came out quite easily, I just pulled it out with a needle nose after I heated it slightly. I heated the case with a handheld torch and only went to the point of it being to hot to the touch. With the cases started out 15 degrees to begin with it didnt go to bad.

Back to the left side main shaft, should that bearing be tight like the rest to come out?

Also on the left side those 2 screws that retain the bearing for the counter shaft, that's the one where the shaft comes out for the sprocket. I had to use my tool that you pound on to get the screws out, they must have had some good loctite in because I had to turn it 2 turns with that tool. I am going to replace the screws if they are available.

What kind of loctite should I use for those screws? The blue or red?

I don't think that bearing has as much of an interference fit as the others, mine usually pops out with a good amount of heat.

The 2 retaining screws for the countershaft bearing are still available.

Either red or blue loctite will work. I think I used red on mine

Jerry Hall · « **Reply #34 on:** March 06, 2015, 01:35:43 PM »

Quote from: countryboy9799;51066

Thanks for the help guys, I will order the 89 bearings. Hopefully I can get that order in before I go to work. I got all the bearings out of the case. The only concern I have is the one in the left side for the Main shaft came out quite easily, I just pulled it out with a needle nose after I heated it slightly. I heated the case with a handheld torch and only went to the point of it being to hot to the touch. With the cases started out 15 degrees to begin with it didnt go to bad.

Back to the left side main shaft, should that bearing be tight like the rest to come out?

Also on the left side those 2 screws that retain the bearing for the counter shaft, that's the one where the shaft comes out for the sprocket. I had to use my tool that you pound on to get the screws out, they must have had some good loctite in because I had to turn it 2 turns with that tool. I am going to replace the screws if they are available.

What kind of loctite should I use for those screws? The blue or red?

The magneto side bearing should have .0003" to .0006" interference fit. The power take off side bearing should have .00020 to .0005" clearance. It is next to impossible to accurately measure anything with calipers and have confidence in your measurements unless you have a set of ring gages to calibrate the calipers when taking inside diameter measurements.

udontknowme · « **Reply #35 on:** March 06, 2015, 08:42:09 PM »

red loctite has no place in these engines imo. especially bolts that go into the aluminum. someday you may need to remove that reatainer and its likely 1 of 3 things will happen.

1 youll strip the head trying to get the bolt out then youll have a huge problem. a huge problem that can be 100% avoided

2 youll have to hit the impact driver excessively hard and will damage your cases. again a 100% avoidable scenario

3 if you do manage to get the bolt out it may take the case threads with it. yep totally avoidable here also

do as you wish but the blue stuff is more than capable on any fastener of these bikes

F-Red · « **Reply #36 on:** March 07, 2015, 07:39:17 AM »

Blue loctite works great!

countryboy9799 · « **Reply #37 on:** March 07, 2015, 09:07:14 AM »

I'll get the 89 crank bearings ordered and use the blue loctite. What about the head and base gasket? I thought for the head it was recommended to use the cr250 gasket. Was it thinner for more compression?

Skeans1 · « **Reply #38 on:** March 07, 2015, 12:48:14 PM »

Does cometic make AFM base gaskets for the 250r?

broken1 · « **Reply #39 on:** March 07, 2015, 09:01:05 PM »

Quote from: Skeans1;51125

Does cometic make AFM base gaskets for the 250r?

Quote from: rk88r;51038

When you order the main bearings get the '89. They have one more ball.

The 89 trx main bearings are the same as cr500 main bearings?

broken1 · « **Reply #40 on:** March 07, 2015, 09:02:48 PM »

Quote from: rk88r;51038

When you order the main bearings get the '89. They have one more ball.

The 89 trx & cr500 main bearings are the same?

Skeans1 · « **Reply #41 on:** March 07, 2015, 09:06:06 PM »

Seems like that's what I remember being told by Pete.

Sent from my iPhone using Tapatalk

broken1 · « **Reply #42 on:** March 07, 2015, 09:10:46 PM »

Yep, just checked the part numbers on cheap cycle parts & there the same. Good to know, thanks.

countryboy9799 · « **Reply #43 on:** March 10, 2015, 11:04:52 AM »

Is this tool worth the money for re installing the crank? I know with the hod rod cranks being tight on the right side I thought it might be a good idea so I don't ruin a crank bearing or crank.

I can add it to my order at Honda of Toledo so it will only be 45 bucks.

Does this thread onto the flywheel side so you can pull the crank into the bearing?

What about the clutch side, can I pull the crank through the bearing on that side?

http://www.ebay.com/itm/NEW-Honda-Driveshaft-Dis-Assembly-Tool-07964-MB00200-/131146273195

Skeans1 · « **Reply #44 on:** March 10, 2015, 11:20:16 AM »

I was told that Mcquire bearing in Portland stocks the bearing not sure of the part number though.