According to Andrews, anybody with a bumped compression ratio is in for some pinging. It also seems a Cometic .030 is a major NO-NO with this cam.George, Yes either the 26 or the 37Cams would be a good choice.
With the 26's your compression ratio would need to be slighhtly
lower. 9.0 would be perfect. These cams build cylinder pressure very fast and higher compression may cause detonation. The 26's have an awesome low speed power band 1800-5200rpm. The 37's are very close 2200-5600rpm they come on a little later and so doe's thier torque. I would consider the 37's
more of a Hotrod cam. Where as the 26's may be considered more of a touring cam. Touring for Bikes that are heavy,traillering, two up riding or climing hills. Both of these cams have a power band that gives them good Hiway performance.
Ralph
Thanks. What was your original question to them?George C said:Right from Andrews Tech:
According to Andrews, anybody with a bumped compression ratio is in for some pinging. It also seems a Cometic .030 is a major NO-NO with this cam.
George,George C said:My question was which cam was right for my build. SE 95" flat tops.
FXSTBI, I weigh 270, I wanted power down low, but did not want to compromise my power at interstate speed.
I asked about which cam they recommended.
Thanks George. I called Andrews and they confirmed what you were told. The tech there said that they recommend 9.0:1 compression for the 26 cam. He said much above that there may be pinging issues. I told him that the BB kit and flat tops comes out to 9.4:1 according to the SE catalog and he suggested going to a thicker head gasket to get the compression down some if I still want to use that cam. Can anyone confirm that the SE BB, flat top and stock heads is indeed 9.4:1?George C said:My question was which cam was right for my build. SE 95" flat tops.
FXSTBI, I weigh 270, I wanted power down low, but did not want to compromise my power at interstate speed.
I asked about which cam they recommended.
After all that, I decided on sticking with the SE 204..
If I went with Andrews, I didn't want the dealer to blame a third party on any shortcomings. If there are any tuning issues, it's all Screamin Eagle...
It sounds like the 26 would work better with a stock 88 bore and it's lower compression ratio.
I'm sure there are some folks out there with first hand experience with the 95" and the 26 who will pipe in and answer some questions.
Just so I'm straight here. Either gasket will work fine in this application but you recommend the .030"?HIPPO said:IMO, if you go and measure the parts, the actual CR at 0 deck height, stock heads and .030" gaskets on a 95" ends up at 9.3 (with the stock gasket at about 8.9) if the chamber is spec 85 cc.
It actually may be easier to tune the bike with the thinner gasket due to the better squish height.
The 06's also have much better flowing exhaust ports.
It should not be a problem with a decent (not even great) tuner, without even considering that most engines do not have 0 deck height, ie they almost always are at least 5 tenths down.
