Honda Spree and Elite 50 Forums

A clogged or under flowing exhaust will burn up your cylinder. It's not letting the hot exhaust gases to escape quick enough between pulses. You will eventually burn up your seals and bearings also.

Lot of stuff here.

Plug is a BP8HIX
I haven't paid attention the mileage, just my gauge dropping.
Pipe has not changed yet. Its a pretty new pipe, so I don't believe it is clogged in anyway. Is it too restrictive ? I don't know. Maybe.
I tried spraying everything and was unable to notice any difference.
I think my next step will be to pressurize it and check for leaks with soapy water.

Im leaving on vacation on Monday, so I don't know if I will get time to mess with it before then.

I was thinking about taking the intake apart and coating all the gaskets with Permatex 85420

Possibly taking the cylinder apart and replacing those gaskets and using some copper coat on the base? The o-ring on the head was installed dry, as well as the base gasket.

Cruizinggrariot said I could borrow the PG Short Pipe that he has. I am going to see if I can do that once I get back from vacation. The weather finally broke here, and I am so axious to get out and ride.

Sweet, good man there.

Update?

He's on vacation I think.

I went over to visit Cruzinggratiotz, and I was able to check out his bikes. The Purple elite is just bad *. He let me yakr this other bike for a spin to see what it felt like. It definitely has better acceleration than mine does, but anyway...

He was nice enough to let me borrow his extra PG Short pipe. It definitely runs different with it, and I went from 60 to 65 with the PG pipe on the GPS. However, it still continues to get hot. It will climb to 400 and I am sure keep going if I didn't stop it.

From what everyone is saying, I guess there has to be an air leak somewhere. I just don't know where from.

Tonight I took off the manifold and used some high tack sealer on all of the gaskets and put it back together. This stuff probably isn't ideal because I don't think it will stand up to gasoline, but I am just trying to go back over everything to try to find a problem . Took it for a little spin, max temp was 375. It is dark out and I can't see the temp gauge so I didn't push it to hard. That being said, I have a feeling they it it gets up to 375, it will probably keep getting hotter. I will have to try it during that day.

The only other thing I can think of to do is just go through and replace the base and head gasket again as well as the crank seals.

I am running out of ideas here and just want this thing to run right :/

Its a Polini 24mm. G9 says it will prob be 108-112ish. I had a 108, tried a 118, 112, 114. They were all getting hot. That was before I put the pipe on. With the pipe I tried the 108,114,116.

I used hondabond on my intake quite awhile ago without any issues so far. I'd say try to find that leak you shouldn't be hitting those temps. If you eliminated everything but the head gasket it's worth a look at it.

With in 2 miles you can burn a hole in your piston.
You have an air leak for sure. On a race ported 50mm fabrizi and extremely ported case and ct black intake with ported v force 3 reeds , .7 squish, 175 psi comp, 26mm polini carb, big blue polini air filter, fabrizi pipe, +4 degree adv flywheel key, malossi cdi, profire coil and hot wire I'm running 50 pilot 124 main jet @5800 elevation. If you're getting close to my jetting and you're using a 24mm on a smaller non race bore you have an air leak. You really need to do a leak down and vacuum/pressure test.

I pulled the head off, and lifted the jug up. I don't think there was anything wrong with the head gasket, however I am a little bit suspect of the base gasket. The edge of it was bent a little bit where it is making contact with the Naraku Intake. I cut a little of the gasket, but I think I want to repalce it because it doesn't look that great. Not sure if something happened when I was taking it apart, or if it was like that before. I think I am going to order up another cylinder gasket kit and replace them. As well as either trim the gasket slightly, or grind the manifold a little bit. While I am at it I'll prob get some crank gaskets also.

Anyway. I took it for a spin. I don't know it anything changed. It will reach 400 in less than a mile of wot.

Today I replaced the crank seals, replaced the base and head gasket. Used copper coat on the base gasket. Also put in a 125mj. Haven't done any other tuning on it. I took it for about a mile wot run and it hit 372 which is much better than it was doing.

I need to do some more testing with it to see if it will continue to climb, and read the plug to see what is happening. At this point, I don't know if my reseal accomplished anything, or if the slightly better temps are from the larger jet.

One thing I noticed with the old base gasket when I removed it (I tried over and over to get a picture but I could not get it to come out right) is that you can see two different witness markings on it from the two sides of the case. One side is definitely higher than the other. I am wondering if it possible that the metal base gasket does not have enough "compression" ability to be able to seal correctly all the way around. As if the left side is smashed and sealed, and the right side is gapped. I would think that ideally after the case had been assembled, the machining on the case deck would have made a perfectly flat surface. I don't know what other engines look like, and if they is normal or if mine wasn't machined very well. This is a case where a paper/fiber style gasket would probably deal better since it is thicker and can contour brtyet better to the split in this case. However, this would probably cause changes to the port timing ?

Next step I guess is to shoot my re-re-build with some ether and look for any leaks. After that, I guess I will have to pressurize it and look for leaks. If I still can't find anything, I think I just give up until my frustration levels return to normal.

Here are a couple attempts at the gasket pics

i run a 130 in my pwk 26mm polini

EDIT: i believe 1man mentioned the permatex copper spray for additional sealing properties. I suggest using that. A new gasket wouldn't hurt...technically "they" say not to reuse them, but who the * are "they" anyway. Don't worry about port timing with a new gasket. Measure your metal gasket and get a paper gasket of the same thickness if you perfer.

While you can see your piston crown, research "piston wash".

That still seems high to me. I used a little honda bond on my base gasket and haven't had any issues. Just a thin layer to help it seal. I have a hard believing you need a 128 main. I'm running the same carb with my corsa and I'm still running a 106 with no temp issues and wot temps on flat are around 300 even on extended runs. Hope you find the problem before the frustration level makes you walk away from it.

DirtyE wrote:i run a 130 in my pwk 26mm polini

EDIT: i believe 1man mentioned the permatex copper spray for additional sealing properties. I suggest using that. A new gasket wouldn't hurt...technically "they" say not to reuse them, but who the * are "they" anyway. Don't worry about port timing with a new gasket. Measure your metal gasket and get a paper gasket of the same thickness if you perfer.

While you can see your piston crown, research "piston wash".

I replaced the base gasket and used 2 coatings of copper coat spray on it. I guess I can look into paper gaskets. I wasn't aware there were different thicknesses. That being said , I should probably find out if it is actually leaking or not first.