Question about 1986 Honda GB 500 Clubmann TT

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Hop up parts for honda gb 500

I am aware of whats available from Thumper stuff but am looking for rearsets, high compression piston, megaphones and complete exaust besides the white bros.unit. Also interested in finding the original white brothers hop up kit as shown in 89' cycle world. Cam, springs, piston, sleeve, carb..etc. Or any other after market parts for 89-90 GB500.

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SOURCE: low compression after a overhaul???

Hi and welcome to FixYa,

Initially, check:
presence of spark at the sparkplug tip/electrode;
fuel entering the combustion chamber. You can check this by removing the air filter assembly and covering the mouth of the carb with the palm of your hand;
it may also just be that the combustion chamber has too much 2T oil, try replacing you sparkplug.

Good luck and Thank you for using FixYa. Happy New Year.

Posted on Jan 02, 2009

  • 2 Answers

SOURCE: Air filter smell like gas

It's perfectly normal for an engine with a carb to have an air filter that smells like gasoline. The reason being is because of a concept called "fuel stand off" - in a nutshell, the air that is going through your carbs towards the cylinders gets bounced back towards the air filter when the intake valves close. Since carbs aren't that smart, the air coming back towards the filter picks up even more fuel from the float bowl, and then heads in to your air filter box to say hello.

Posted on Feb 17, 2009

  • 132 Answers

SOURCE: carburettor diaphragm/piston springs

short spring to the front

Posted on Jun 01, 2009

  • 5 Answers

SOURCE: 1986 Honda GB500 oil filters

Contact these folks for obtaining an oil filter for the GB:

Here is their email address:
Phone: 360-563-0376 Fax: 707-248-0726 Email:
Address: 721 Ave D Suite C, PO Box 1357, Snohomish, WA 98290
Their website info: OIL FILTER, O.E. EQUIV., 6-PACK: You can't change them too often
OIL FILTER, BETTER QUALITY: Provides better filtration than O.E.

Hope this helps.

Posted on Jun 19, 2009

  • 1 Answer

SOURCE: Need rebuild kits for carbs for a 1982 Goldwing Aspencade

Posted on Aug 12, 2009

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2 Answers

I just bought a 1985 Honda xr250 and motor is disassembled and was told and can see that the intake valves hit the piston and bent. Only paid $50 for bike but what parts do I need to purchase to run?

Hi, Devin for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your problem. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Can i replace my standard mufflers with long reverse cone megaphones if yes what fine tuning is involved

Wow, I have heard the term 'reverse cone megaphones' since the late 1960s!

They create a little back pressure to force some of the unburnt fuel back into the combustion chamber. They also sound great. no fine tuning involved as I am aware.

Ask Kevin Are Reverse Cone Megaphone Exhaust Systems Making Comeback

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What should the cold compression reading be per cylinder on a 85 Honda shadow 500

There is none!

A compression test is done on an engine at operating temperature.
This allows the pistons, rings, etc., to be fully expanded, and to give an accurate reading.

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1988 XR 250r smoking and blowing oil out tailpipe, compression 120, cylinder walls in great shape, what should I look for?

The compression is low. This indicates bad piston rings. The cylinder may look okay but chances are the cylinder wall has low spots. I suggest you have the shop bore the cylinder and install a first oversize piston and rings. Since the head is already off, I would re-seat the valves and install new valve guide seals. With proper compression the bike will be noticeably stronger.

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Try the wiesco piston web site they have not only the piston you need but list all the specifications along with a picture of your piston

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Rebuilt motor top to bottom over sized piston to much compression cant startreplaced bushing in kicker 3 times

If compression is too high, you can have some metal ground out of the head, but have it done by a specialist. Other way is to try using extra head gaskets to increase combustion chamber vol.

Sep 24, 2010 | Honda CR 500 R Motorcycles

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How do I get to the piston rings on a 1981 honda xl 500 off

the cylinder will slide off the top of the piston, then you can replace the rings and slide the cylinder back down over the top of the piston. The bottom edge of the cylinder sleeve should have a small chamfer in it to aid in getting the rings into the cylinder.

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1 Answer

81 honda cb650 custom. when my brakes get

Sound like your brake caliper for the front (I'm assuming that it's the front) is hanging up. They get corrosion and the caliper piston sticks. Have it rebuilt, or do it yourself. I take it off, and use compressed air at the hose connection to "blow" out the piston, with a piece of wood where the pads go to protect the piston from the blasting out. Be careful when doing this because it comes out like a shot!!! If it wont move, I have made a grease fitting fastener that threads in, and pumped grease into it to remove the piston, messy but safer. Clean up the piston and caliper real good and re-asemble. Use brake fluid to lube up the seal.

Jul 31, 2009 | 1996 kawasaki GPZ 500 S - GPX 500 R

1 Answer

Fuel from engine breather pipe

There are just three ways for fuel to get into the top end. As mentioned, bad valve guides (exhaust guides are just as old as the intake guides). Bad rings with raw fuel getting past the rings. Either way, fuel is getting up there. Time for a valve job and fresh bore with new pistons and rings. If able to find the parts, I would also install new cam chain and tensioner. You have a very early CB450. Today's VIN numbers have 17 numbers. That is what didn't seem right.
Go to the site below where you can see a parts diagram for your specific bike. I already checked and a lot of parts are available for your bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.
You can also Google 'vintage motorcycle parts honda" and find stuff there.

Top rating for this answer? Thanks!

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