Messages

1

Duner / Little Sahara April 21-24

« on: February 28, 2016, 09:06:48 PM »

Hey guys we are going to little Sahara sand dunes April 21-24th. I know there will be at least 4 Rs in our group. We will be in cowboy camp. Should be a blast as usual. Hope to see ya there!!!!

2

Pumashine 250R Products / Nice spacer plate

« on: July 22, 2015, 09:58:11 PM »

yes used a Dremel tool on it and it fit nice and snug.

3

Pumashine 250R Products / Nice spacer plate

« on: July 22, 2015, 07:50:19 PM »

Spacer plate I ordered from you work very nice. Great work Pumashine thanks for helping keep these machines alive.

4

Engine and Bottom End / Motor rebuild project

« on: July 20, 2015, 01:40:30 PM »

that dome is way too small.  I think a 20cc dome with the stock .063 head gasket puts you right at 210psi so I can only imagine what a 15.5cc dome would do!!

so your saying I shoud up the size of the dome to lower compression down? 20cc would put me at 14:1

5

Engine and Bottom End / Motor rebuild project

« on: July 19, 2015, 10:03:50 PM »

So I put everything together and my squish came out to .040". Calculated compression next and got 18:1 which is crazy. I have a 68.5 bore and 72mm.  15cc in combustion chamber plus .5cc would equal 15.5cc.
265 + 15.5 = 280.5 divide that by 15.5 = 18.09

does anyone have advice on what to do?

6

Engine and Bottom End / Motor rebuild project

« on: July 08, 2015, 11:50:48 AM »

Adding the spacer is to keep the 85-86 piston skirt from hitting the crank. If you have an 87-89 cylinder why not just stick with the 87-89 piston?

 I guess I didn't mention my cylinder is already bored to 68mm which is the largest piston I could find for 87/9. I have damage on inside of cylinder from melting down the piston so now I need it bored. I have heard of others doing this as a cheaper option.

7

Engine and Bottom End / Motor rebuild project 86 piston in 87/9 long rod motor

« on: July 07, 2015, 12:51:07 PM »

Hey I'm working on freshening my top end going with an 86 68.5mm piston in my 87/9 motor. Going to add spacer plate so piston clears head and port timing stays the same. Any ideas or concerns would be great guys. Just wanting to make sure I'm not missing something.

8

Duner / Little Sahara -- Weekend after Snake Hunt

« on: January 26, 2015, 01:22:00 PM »

I will be there