Originally Posted by scrapsz (Post 12378881)

I averaged 9:10 to 9:25 last month at the Tilityard for the Roar Region 2 race series race. My Roma was at maybe 3 quarts of run time when did a few timed runs. This was with the 2084/41021 combo on 6.0 restrictor in 811T with OEM clutch (4 alum shoes-med springs) on 30%. Needles were not at a full race tune...a touch rich.

Personally I love the sound of the 9886 no matter what engine I've used it on. Unfortunately I get lower mileage so I rarely use it anymore. But wow...engines sure sing on top, nothing like the wailof the 9886. FWIW I have not tried the 9886 on the Roma, only the 9901 and 2084. Compared to the 9901, my 2084 gave better fuel mileage and feels smoother across the power band. I would like to try the 2096 on the Roma just have not gotten a chance to do so.

Originally Posted by jrz93 (Post 12379889)

What about the jp3? Ill prolly have to do some test runs, borrow a 2084 and compare the 3.. So far the 9901 got 8 minutes

Originally Posted by aznitronut (Post 12379922)

I was thinking about getting Roma Monty, Whata ya think?

Originally Posted by latemodel13 (Post 12377665)

If you figure out how to get more than 8 minutes out of the Roma let me know. I'm running the 9886 pipe with 41001 header and get 8 minutes .It runs awesome and if I can pit at 7.30 I'm happy. I geared it up to a 14 tooth clutch to help tame it down some but this thing screams on the straight.;)

Originally Posted by desotoracing (Post 12381818)

41021/51016 combo will give you the best mileage from what we see traveling around. For a carb restrictor, you should try 6.0/6.5/7.0. We recommend starting with 6.5. LSN is about flush +/- 1/4 turn. HSN is about 1/2 to 1 turn in from flush on a fully broken in engine. Newer engines need the HSN more open (~flush) and that's why it takes a little while (1-2 gal) for the mileage to come around. We normally see ROMAs doing 10+ minutes in Truggies without stressing the engine. To get 12-15 minutes you have to run the engine very lean and you better be careful and know what you are doing.

Originally Posted by nickdawg18 (Post 12385522)

Im going to be breaking in my plus 4 btts tonight. What restrictor should i use? And how many idle tanks should i go through before going through tanks at the track?

Originally Posted by jccj816 (Post 12386955)

When breaking in the engine, is there any certain temp you shouldn't go over? Do you let the engine cool down between tanks?

Originally Posted by NZReilly (Post 12394413)

What would cause the piston to be able to be pushed through the liner on a 4btt WC that's only done 4 Ltrs

Originally Posted by NZReilly (Post 12394413)

What would cause the piston to be able to be pushed through the liner on a 4btt WC that's only done 4 Ltrs

Originally Posted by houston (Post 12394524)

that don't sound right but I would guess improper breakin , bad fuel or a number of things

overleaning too early would be my suspicion