All right guys, help a brother out. I bought a brand new Plus-4btts about a month ago and have slowly breaking it in. I used the heat method and broke it in just like the "break-in" bible says, then been running conservatively on the track in practice. The motor was so tight new it took me 1 hour to get it started. As soon as it would go up in the sleeve it would freeze, used comp heat to heat it up to 220 every time. Finally it turned over and got it started and idled the first tank through...... That is just a little history.
Now the motor has 1.5 gallons on it and is just not running very well at all. You can turn it over by hand, but barely, which I think is the root of my problem. The motor idles for day and everything is good to go. The needles are now set to flush both the HSN and LSN. Nice crisp low idle to it. The thing has no power to it at all!!!!!! It really bogs on the LSN and is really rich! I try to lean it out an hour or 2 and it starts pinging like it is lean!!!! Problem is driving it on the track it has no bottom to it!!!!!!! Does not have a very strong top to it either. Even with these conditions it is temping at 260. If I lean it to race trim on the bottom it will get up close to 300 pretty quick. I have ran, and ran, and ran this motor at its rich settings and 250 and it never really wants to get any better!!!!! I take my 3 other motors, drop them in with same clutch, pipe, tank and lines, and they scream at 220! I can tune anything and am sort of puzzled. I know it is not clutch, tank, fuel lines as they are all new other motors run great!!!!! I have inspected front bearing and see no signs of leakage.
Should I keep running it now they way it is and eventually it will loose more pinch and problem solved?????? I ran it for an hour straight last night and never improved, still really tight!!!! I think I can't get rid of the pinch, I know it is unbelievable but 1.5 gallons and I really cant turn it over by hand??????? This one is going to need a new rod if it ever breaks in.
Any thoughts by the Nova experts???????
Nova C5tgc (for Break-in)
Byron's 30/11%
Nova 9886