170psi Spree 37mph stock gears

deuce217 · Post by **deuce217** » Tue Dec 20, 2011 11:46 pm

http://www.youtube.com/watch?v=2BWLX4dd2FU

Hey Bear does this count as high compression?

Bear45-70 · Post by **Bear45-70** » Tue Dec 20, 2011 11:49 pm

Looks like you need to put that head gasket back in there.

deuce217 · Post by **deuce217** » Wed Dec 21, 2011 12:45 am

Bear45-70 wrote:Looks like you need to put that head gasket back in there.

Nope, im going to risk my spree for the sake of the guys on here. Because this thing kicks * and if it will last people need to know.

niftyman · Post by **niftyman** » Wed Dec 21, 2011 1:39 am

At least run high octane gas

SuprasNsprees · Post by **SuprasNsprees** » Wed Dec 21, 2011 8:11 am

niftyman wrote:At least run high octane gas

+1 .

inb4IMELTEDMYPISTON

and never trust a man in Crocs

swimmingfree · Post by **swimmingfree** » Wed Dec 21, 2011 8:33 am

how mine miles do you have on it cents you put the bbk on her ??
the compression may still go up as the rings set better.. o by the way did you do it at w.o.t.???
you seam to be good at math and doing that kind of work have you got a number like 10/1 or 12/1 ???

anuff new post i like reading along but 4 places is driving my small f up brain nuts ... lol
dam good read as well as grate input grate photo and even vid good to see
thanks
swimmingfree

deuce217 · Post by **deuce217** » Wed Dec 21, 2011 10:08 am

swimmingfree wrote:how mine miles do you have on it cents you put the bbk on her ??
the compression may still go up as the rings set better.. o by the way did you do it at w.o.t.???
you seam to be good at math and doing that kind of work have you got a number like 10/1 or 12/1 ???

anuff new post i like reading along but 4 places is driving my small f up brain nuts ... lol
dam good read as well as grate input grate photo and even vid good to see
thanks
swimmingfree

Thanks for the kind words Swim. I do not know the formula for compression ratio, but I can google it later and find out. Sorry to make new threads but this project seems to have a few different important discussions and it would be nice nice to have them separate so if others dont want to read about a compression test, or dont want to read about BBK's, they can get right to the meat. Not to mention in the future when we want to read up on and old thread on compression and the * was NEW POLINI EXHAUST. It might never be found again lol. I look forward to sharing some more info later, I have put 2 tanks of fuel through it now, and about the WOT yes sir latest compression test read 175psi.... No knock audible at the moment but its hard to hear over the exhaust. Hit 41 mph on gps now down a slight grade(hill). I order a new rear axle bearing because I notice play on it when I inspected the gears. When that gets in I will slap the taller gears in and she what she will really do.

deuce217 · Post by **deuce217** » Wed Dec 21, 2011 10:59 am

SuprasNsprees wrote:
niftyman wrote:At least run high octane gas
+1 .

inb4IMELTEDMYPISTON

and never trust a man in Crocs

Good call on the crocs, I use them to go to and from my shop.. I dont wear shoes in the house per the BOSS(Wife), the messed up thing is my dog gets to go in or out with mud on his feet...

tazland001 · Post by **tazland001** » Wed Dec 21, 2011 1:48 pm

Wow 170 thats high compression for a spree BBK.

Taz

deuce217 · Post by **deuce217** » Wed Dec 21, 2011 2:23 pm

tazland001 wrote:Wow 170 thats high compression for a spree BBK.

Taz

Do you think its too much?

Bear45-70 · Post by **Bear45-70** » Wed Dec 21, 2011 3:04 pm

Yes, to much, maybe if it was a drag bike, but a street machine, way to high.

FYI, with a two stroke you will NEVER hear it knock. Oh and a CHT will not tell you before you burn up the piston. It happens too fast for the gauge to catch it.

Trafficjamz · Post by **Trafficjamz** » Wed Dec 21, 2011 4:56 pm

175 is way too high.

i suspect that adding a head gasket will drop it 10-15psi

you might want to add a base gasket too. your port timing will change a bit......but I think t will be ok.

If this is going to be a daily driver, you want no more than 145psi

deuce217 · Post by **deuce217** » Wed Dec 21, 2011 9:53 pm

Trafficjamz wrote:175 is way too high.

i suspect that adding a head gasket will drop it 10-15psi

you might want to add a base gasket too. your port timing will change a bit......but I think t will be ok.

If this is going to be a daily driver, you want no more than 145psi

I will throw it on there and report how much the compression decreases.
I drove the spree tonight and was passing cars uphill I never thought I would see the day... I must get a camera dude o follow me so I can so you guys. It reminds me of those hawaii guys hauling a s s on YouTube! Except I can't get on a highway. Does anybody have a nice temp gauge they recommend? Thanks

maddog · Post by **maddog** » Thu Dec 22, 2011 1:58 am

i don't think so, my polini evolution bore pumps 176 psi on my GTR = 90mph- sorry this bore is only for jog engines

Bear45-70 · Post by **Bear45-70** » Thu Dec 22, 2011 2:04 am

maddog wrote:i don't think so, my polini evolution bore pumps 176 psi on my GTR = 90mph- sorry this bore is only for jog engines

And the lies continue.

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170psi Spree 37mph stock gears

170psi Spree 37mph stock gears

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