Removing the fan cover? Overheated the engine?

[griff313]

High folks!!! I just joined !!! I have a 86 spree, 3457 miles all stock and original, ran good till it wasted the piston. My question is this, i removed the fan cover because it was rubbing the the fan, it drove fine the 5.5 miles to work. I drove it home at lunch, and on the way back it died. I removed the head, jug and piston. I found the piston had scored, and the material built up on the cylinder wall. Is the fan cover a key piece of cooling? Also is there any tips that may help cool the engine better? And last is a BIG BORE 48mm a good idea? Am I going to get more than a 100 hundred mile of use? If so who makes the better one? Thank you guys for taking the time to read this, and information is always appreciated!!!

[tw39515]

yes the fan cover is a key piece of cooling, it is a must have. taz makes the only bbk for the spree and its the cheapest way to get it going again.

[Trafficjamz]

Read this thread

viewtopic.php?f=16&t=13371


Cooling plastics are a must have item.

[Bear45-70]

This is the same as "I removed my radiator from my car and the engine overheated."

[Trafficjamz]

This is the same as "I removed my radiator from my car and the engine overheated."

Just because he went 3457 miles with no problems, and then removed the plastics, went 5.5 miles more and it blew up, does necessarily mean that it was a cooling problem.

[Bear45-70]

This is the same as "I removed my radiator from my car and the engine overheated."

Just because he went 3457 miles with no problems, and then removed the plastics, went 5.5 miles more and it blew up, does necessarily mean that it was a cooling problem.

Yeah, right.

Why would anyone remove this stuff? Honda did not go to the expense and trouble of installing this stuff for looks. It's there for a reason it's there. If something is rubbing then something is bent, broken or loose, fix it, don't remove it.

[wiguy05]

1. i removed the fan cover because it was rubbing the the fan,

2. I drove it home at lunch, and on the way back it died.

3. Is the fan cover a key piece of cooling?

4. Also is there any tips that may help cool the engine better?

SERIOUSLY?

[Spreetard]

...well, i read this last night and...

If these are real questions, then by no means should you think about putting a big bore kit on it or, for that matter, walking within 10 feet of the bike with tools in your hands. Do lots of reading first, arm yourself with basic knowledge. If you do get a BBK, get the 44mm, it is easier to tune for those who haven't grasped the basic principals of how a fan works.

Honda did not see fit to equip the spree with many extra parts that are not needed it to run properly.

[Wheelman-111]

Greetings:

Easy on the , thar, pards. We all have done some things we're not too proud of. So now you know, if none too gently, that the shroud ensures all that nice cooling air stays where it can do some good. Now you have a top-end problem in addition to the wobbly fan.

I suspect the alternator flywheel might have worked loose. If it wasn't reinstalled correctly by the P.O. that happens surprisingly often. You do need a flywheel puller to remove it correctly, then reposition a Woodruff key, then set the flywheel's nut to the correct torque using a holder tool to keep the flywheel from spinning. If these things are strange-sounding and confusing to you, do some reading.

Good luck!

[griff313]

This is the same as "I removed my radiator from my car and the engine overheated."

Just because he went 3457 miles with no problems, and then removed the plastics, went 5.5 miles more and it blew up, does necessarily mean that it was a cooling problem.

Yeah, right.

Why would anyone remove this stuff? Honda did not go to the expense and trouble of installing this stuff for looks. It's there for a reason it's there. If something is rubbing then something is bent, broken or loose, fix it, don't remove it.

I REMOVED IT BECAUSE ONE SCREW HAD FELL OUT, AND THE OTHERS WERE LOOSE, IT WAS RUBBING AGAINST THE COOLING FAN WHILE I WAS RIDING DOWN THE ROAD. THAT'S THE ONLY REASON I DID THAT

[Bear45-70]

I REMOVED IT BECAUSE ONE SCREW HAD FELL OUT, AND THE OTHERS WERE LOOSE, IT WAS RUBBING AGAINST THE COOLING FAN WHILE I WAS RIDING DOWN THE ROAD. THAT'S THE ONLY REASON I DID THAT

Why not just tighten everything back up and replace the missing bolt like a smart person using a very little bit of common sense would have done? You spent a lot more time and effort taking everything off just so you could destroy your motor.

FYI, using all caps on the internet is the same as yelling.

[bradthreee]

Your fan was probably rubbing because you have a fan shround from a different year Spree. Im guessing you have an 86 and are using an 85 cover.

The 84-85 uses a smaller fan cover due to the smaller flyweel that attaches to the smaller diameter crank end. Even the fans are different.

[evilone]

FYI, using all caps on the internet is the same as yelling.

I was under the impression he was yelling. I WOULD TOO IF I GOT THE SAME REPLIES!

[Bear45-70]

FYI, using all caps on the internet is the same as yelling.

I was under the impression he was yelling. I WOULD TOO IF I GOT THE SAME REPLIES!

If no one tells him he did something stupid, then he has every right to continue do those thing. If you are wrong, you have no right to yell when you are caught.

[hammer]

Easy folks. You are only stupid if you don't learn by your mistakes. No biggie! Good chance to work on the top end of a 2 stroke. A big bore kit is an option of course but you could also pick up a used piston and cylinder off of ebay pretty cheap. Then order a new set of rings and some new gaskets from Honda. It is pretty cheap fix. If you go back with stock parts you won't have to deal with tuning issues until you have some more experience under your belt.

With a new set of rings it is going to run better than it did before you stuck it. Also included in the repair is getting all the cooling shrouds in place too. There is plenty of people who can help walk you through the remove/replacement of the parts if you need help.

BTW I think this board would be a lot better if some folks would show just a little respect for others when making comments.