#Squish doo pro#

If it was running offshore they used their 92 Octane Sleeper kit HERE Scroll down, there is port work, carb work and head work. Remember, this is not a stock engine they're discussing.

#Squish doo pro#

(Note : This XP won the 90 minute 1200 pro overall at the Havasu Global Offshore Finals) Since then, we have not experienced this problem again. 042' squish clearance must be maintained on all Group K modified top ends. After this experience, we specified for our assembly instructions that a. 008' of base gasket thickness could turn a weakling into rocket. The boat pulled viciously up to 7040 rpm.just like all our other test boats. The next morning we gave the boat a short break-in.then gassed it. 024' (6 hole) base gasket and replaced it with a. At the time, we didn't think this was the problem.but it was the only thing we saw that we could 'fix'. Besides the indicated compression being just a little low, the only other inconsistency was that the squish clearance seemed to be about. Back at the shop we checked out every possible problem. After a quick test ride, we found this XP to have mediocre acceleration and a 6900 rpm peak (that's 150 rpm short of the norm). After a few unsuccessful attempts to resolve the problem with carb tuning, he came to our shop with the machine. We were concerned because all our other test riders had reported big increases in bottom end as well as peak rpm. After the break-in, the test rider reported a little better top end, along with average bottom end power. We shipped the kit to the owner, who had it assembled at a local shop. Or use the head I have on there now and have it planed and then use what ever gasket will work? 3,4,or 6.Īnd the dreaded option, Swap in my spare brand new cylinders and top end kit to see if its better.īase Gasket Thickness - 'Jon's Story' - One of our early test boats was an XP that was to be raced in region one offshore. Use my other slightly pitted head that will drop the results a bit and maybe let me use a 3 or 4 hole (testing with it when I go out again.) Since I'm practically splitting hair's here, I think the polisher did take a bit out of the squish band.

I'm testing with 1.7mm solder and measuring the most squished part.Īnother thing. I have a 3, 4, 6 hole gasket available but that makes it just squeaking into the limit of 1.6 in certain places with the 3 hole.

It's inconsistent since I'm not always exactly where I was the previous measurement and sometimes I catch the ring. While I'm inside for the moment here are my measurements without any base gasket.