this really sucks?
03-17-2006 | 01:10 PM
#21
VIP Member
Joined: Jan 2004
Posts: 2,530
Likes: 5
From: Sherman, Texas
Re: this really sucks?
Originally Posted by briana
on 35 1998 lightning iam very unhappy with the performance after my engine upgrade this is why.
before the upgrade with 1998 tired motors one motor had 90 compression on 2 cylinders the boat ran 72.1 gps full fuel,2 people, spinning 26 hydromotives @5000 rpm wot.
the upgrade was asm, new upgraded crane cam, dart heads, msd ignition, roller rockers, cmi exhaust and a computer reflashing. cost of parts was approx 18,000.00.
heres what the performance is now(it sucks)
between 1/2 and 3/4 fuel,2 people, 26 hydromotives compression is back to 150+ on all cylinders. boat ran 74.4 gps @5000 rpm
water and wind were the same before and after.
the only thing i did not do was change the intake to get more air into the motor. do you guys think this is hindering the new heads and cam from working properly ie creating more hp?
before the upgrade with 1998 tired motors one motor had 90 compression on 2 cylinders the boat ran 72.1 gps full fuel,2 people, spinning 26 hydromotives @5000 rpm wot.
the upgrade was asm, new upgraded crane cam, dart heads, msd ignition, roller rockers, cmi exhaust and a computer reflashing. cost of parts was approx 18,000.00.
heres what the performance is now(it sucks)
between 1/2 and 3/4 fuel,2 people, 26 hydromotives compression is back to 150+ on all cylinders. boat ran 74.4 gps @5000 rpm
water and wind were the same before and after.
the only thing i did not do was change the intake to get more air into the motor. do you guys think this is hindering the new heads and cam from working properly ie creating more hp?
03-17-2006 | 05:50 PM
#27
Racer
Joined: Sep 2005
Posts: 2,126
Likes: 0
From: L.I. N.Y. Boca Fla.
Re: this really sucks?
PS also allways dyno you spent a lot of bread another grand at most you could have played with them on the dyno. we found another 50 hp on a 900hp playing with jets, plugs and timing
03-17-2006 | 06:20 PM
#28
Registered
Joined: Oct 2000
Posts: 3,045
Likes: 3
From: N. NJ, Eastern LI
Re: this really sucks?
hmmmm, I'll throw out a thought from experience. Did your mechanic actually do the work he said??? Lots of unsavory mechanics out there. Trust me, I think I found them all!!!
