16:1 Piston for the Alcoholics
#11
05-07-2004, 04:35 PM
#12
05-07-2004, 06:55 PM
16:1 Piston for the Alcoholics
I too heard was told by MRHP that he is blueprinting a 16:1 piston. You may want to speak with him on that piston but I know it's in the works.
JMiller
#13
05-07-2004, 07:02 PM
Join Date: Jan 2000
Posts: 2,880
Likes: 0
Received 0 Likes
on
0 Posts
16:1 Piston for the Alcoholics
Originally posted by: Sandragggen
They are here and have been for some time. I've had mine for about 6 months or so and it cost me $400. Perhaps MRHP is redesigning...I'm gonna have to give him a call.
JMiller
I too heard was told by MRHP that he is blueprinting a 16:1 piston. You may want to speak with him on that piston but I know it's in the works.
JMiller
16:1 is around 338 psi of cranking pressure with Web 109 cams and around 366 psi with stock cams (assuming 3% leakdown).
14:1 is around 292 psi of cranking pressure with Web 109 cams and around 316 psi with stock cams (assuming 3% leakdown).
#14
05-07-2004, 07:49 PM
Pro Rider
You can take all the "shootouts" and put them in one bucket and you won't have beans.
You can take all the "shootouts" and put them in one bucket and you won't have beans.
Join Date: Feb 2004
Posts: 473
Likes: 0
Received 0 Likes
on
0 Posts
16:1 Piston for the Alcoholics
I can't find how to disable the compression release in the DS shop manual. It shows how to do a leakdown. Can anyone help me with the right procedure for disabling the compression release. I want to do both a compression check to verify figures I was given and a leakdown just for my own knowledge.
#15
05-07-2004, 08:19 PM
Join Date: Jan 2000
Posts: 2,880
Likes: 0
Received 0 Likes
on
0 Posts
16:1 Piston for the Alcoholics
a safe and easy way is to use a VERY THIN piece of small cardboard (such as from individual spark plug box lid) rolled into a small cylinder and insert into the gap between cam and decompressor. Just be careful that the cardboard doesn't fall into motor and don't forget to remove when done! Don't forget to hold throttle wide open when doing compression test. I always turn over several times (not just once) until reading settles out.
#17
05-07-2004, 11:02 PM
16:1 Piston for the Alcoholics
Can't you just take the compression release out of the DS motor and sling it ??
In my XR650 motor it has to be removed to run a decent cam anyway, have not had one for years.
Compression releases are a pain, just as soon do without one, just a little harder on the starter.
A lot easier to check specs.
In my XR650 motor it has to be removed to run a decent cam anyway, have not had one for years.
Compression releases are a pain, just as soon do without one, just a little harder on the starter.
A lot easier to check specs.
#18
05-08-2004, 01:09 PM
#19
05-09-2004, 03:03 PM
Pro Rider
You can take all the "shootouts" and put them in one bucket and you won't have beans.
You can take all the "shootouts" and put them in one bucket and you won't have beans.
Join Date: Feb 2004
Posts: 473
Likes: 0
Received 0 Likes
on
0 Posts
#20
05-09-2004, 11:40 PM