OzVMX Forum

Marque Remarks => KTM => Topic started by: noisy toy on December 03, 2015, 10:42:57 am

Title: twin-plug head
Post by: noisy toy on December 03, 2015, 10:42:57 am
I want to fit a twin-plug hi-comp head to my 84 495. I know the coil is different, but are the rest of the electrics the same, like stator and flywheel?
cheers.
Title: Re: twin-plug head
Post by: oz555ktm on December 03, 2015, 11:17:00 pm
I do think  so

Do you need a  2 Plug head and twin coil for a 495 ?
Title: Re: twin-plug head
Post by: Blackjack on December 06, 2015, 07:56:42 pm
Do you have the 84 replacement hi-comp head or a head from a previous year?
The base of the head is different from the previous years so there will be issues sealing on the barrel

(http://i155.photobucket.com/albums/s298/blackjack_595/Mobile%20Uploads/20151102_210336-1_1.jpg) (http://s155.photobucket.com/user/blackjack_595/media/Mobile%20Uploads/20151102_210336-1_1.jpg.html)
Title: Re: twin-plug head
Post by: Slakewell on February 20, 2016, 07:09:15 pm
I want to fit a twin-plug hi-comp head to my 84 495. I know the coil is different, but are the rest of the electrics the same, like stator and flywheel?
cheers.

My first thought is why?
Title: Re: twin-plug head
Post by: bigk on February 21, 2016, 08:40:24 am
'84 is touted as the lowest horse power 495 but they are hell rideable. Perfect (for me anyway) smooth, easy to manage power. Still a big bore 2t by any stretch of the imagination but one just about anyone could ride without fear. I'd leave it alone & enjoy it as it is.
K
Title: Re: twin-plug head
Post by: noisy toy on February 21, 2016, 09:48:39 am
I have a twin plug head already, just thought it might be fun to chuck it on. but if it wont fit it wont fit!  I know it will have more than i will ever need anyway, but you have to muck around sometimes. :)
Title: Re: twin-plug head
Post by: bigk on February 21, 2016, 12:28:12 pm
Pretty sure it will fit but at the risk of turning the bike you trust into one which may bite you. I had a go on an '81 495, was unreal in a straight line for 5 minutes. That was enough though.
K
Title: Re: twin-plug head
Post by: Hoony on February 21, 2016, 05:52:53 pm
what happened to that Viper guy from about 8 years back  that had 2 495's up your way BigK ?
Title: Re: twin-plug head
Post by: bigk on February 21, 2016, 06:07:29 pm
Don't know Hoony, haven't seen a 495 in Viper for years now. One guy who worked for me raced a 390 5 or 6 years ago & Poof boy was a sponsored rider on my '84 495 about 3 years ago. Not many Kato's at all in VIPER for a long tome now.
K
Title: Re: twin-plug head
Post by: Slakewell on February 21, 2016, 06:40:41 pm
There was a high compression single plug head , mostly in the states you could try and source.
For me ( and I have ridden 495's since they were new) If you going to build a race bike spend your money on the crank and get it balanced , get the right pipe/carby combo for you. I go for mellow. 38mm bing and a good long header.
Title: Re: twin-plug head
Post by: noisy toy on February 22, 2016, 08:26:14 pm
Thanks Slakewell. this bike was a basket case for a long time, slowly bringing it back to life. It had been re-sleeved back to standard by the previous owner. I am trying to source a new std piston kit if anyone has one. I know i can source an oversize kit but i dont want to bore out a good cyl. The pipe is ok but i will try and source a better one eventually. And a muffler.... :)
Title: Re: twin-plug head
Post by: oz555ktm on February 22, 2016, 10:01:27 pm
I Do have a NOS Piston and Rod .. the Last out of Boltons MotorCylces

Cost me 3 Arms and 4 Legs

(http://i1063.photobucket.com/albums/t512/oz555ktm/KTM%20495%20piston%20amp%20Rod.jpg) (http://s1063.photobucket.com/user/oz555ktm/media/KTM%20495%20piston%20amp%20Rod.jpg.html)

you are better to have a Look at  Andre Horvath's Ktm and Vintage Parts

http://www.enduroklassiker.at/
Title: Re: twin-plug head
Post by: gra1961 on February 23, 2016, 07:42:27 am
nice display bench dennis