ATC110 Plug / Head ???????????

[ml1275]

Hi guys

Bought a P.O.S 110 a few months back. Stripped down, loads spent and so on.

Anyway just picked up last batch of bits after getting the engine back together and to my horror I am sat here looking at a spark plug that I am sure is the wrong size for the head (the trike is actually about 200 miles away at the moment). I am 99.999% sure that the plug fitted is a 14mm thread and the new D8HA is a 12mm thread. I recall when pulling the motor apart thinking it was a bit odd having a 'standard' size plug

Q. :wondering were any of the laydown honda motors fitted with this size of plug - C90 etc............


Will be seeing the trike next weekend - I hope I am wrong :(


Help
ML

[tyman]

well hmmm.... maybe someone stripped the threads out and just tapped it out to a 14 and put a different plug in it, and perhaps washers to space it out if it went in too deep..... just a thought...

[ml1275]

I think you may be right tyman - the threads aint too good anyway.

I can either try to find the right grade plug with a 14mm thread or (preferably) another head...... bits are a bit scarce over here in the UK.

ML

[tyman]

or you could find someone who can fill the hole for ya and then retap it right.. (thats what i did to mine... i put too long of a plug in it and didn't notice, pulled it and the piston jammed the sparkplug..... took it to a local junkyard mechanic and he welded up the hole and retapped it for me for about 25 bucks.. then i had to buy a new piston and rings.... i guess we all make mistakes

[4cylinders]

hey, don't get exited until you see it. 14mm plugs are better anyway, don't foul as easy. kawasaki and yamaha both use 14mm, and don't strip as easy. If I strip the plug hole on a honda, I just retap to 14mm. they are same number/ heat range different thread. ND X24esu/W24esu.

[Erics350x]

Try a NGK BR8ES . You could install an Heli Coil.

[ml1275]

Cheers guys

Panic over - hopefully. Looks like I can get a plug to suit - B8HS. Nice little X-ref guide here......

http://www.spark-plugs.co.uk/graphics/tech/ngk_sym.gif

Maybe up and running next week :)

ML

[jason 32]

yea i would just use a 14mil - or a insert of some kind

[PymerOne]

I think you may be right tyman - the threads aint too good anyway.

I can either try to find the right grade plug with a 14mm thread or (preferably) another head...... bits are a bit scarce over here in the UK.

ML

you could try <http://www.4-strokebikecentre.com/index2.htm> for parts... this little shop of bikes is located in the Netherlands.
Shopowner is a very nice guy.

Grtz, P1

[ml1275]

Thanks P1

Looks like an interesting place. Might have to go for the 4 valve conversion !!!!!!!!!!!! once I have translated the site ;-)

Cheers
ML