500efi's
#1
Registered
Thread Starter
500efi's
I am about to buy a 2000 donzi 33zx with twin 500efi's that have 324 hours on them. should i be conserned about haveing to rebuld the topend sooner then i would like? the compreshion test came back good.
#3
Registered
Join Date: May 2010
Posts: 638
Likes: 0
Received 0 Likes
on
0 Posts
I have someone check spring pressure on them. You may get a few more hours out of them.
#5
Registered
Join Date: Feb 2012
Location: Spokane, WA
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Can someone explain why @ 3-400 hrs. these motors need rebuilding? Lets say that you drove the boat at WOT (5000rpms) for that 400 hrs that would still only be around 24,000 miles on a car. I have built a couple of hi-perf motors before, I just don't get the low hour rebuilds.
#6
Registered
iTrader: (2)
Join Date: Nov 2006
Location: Great Sacandaga Lake, NY
Posts: 1,261
Likes: 0
Received 1 Like
on
1 Post
Can someone explain why @ 3-400 hrs. these motors need rebuilding? Lets say that you drove the boat at WOT (5000rpms) for that 400 hrs that would still only be around 24,000 miles on a car. I have built a couple of hi-perf motors before, I just don't get the low hour rebuilds.
#8
Registered
Can someone explain why @ 3-400 hrs. these motors need rebuilding? Lets say that you drove the boat at WOT (5000rpms) for that 400 hrs that would still only be around 24,000 miles on a car. I have built a couple of hi-perf motors before, I just don't get the low hour rebuilds.
#9
VIP Member
VIP Member
I did a set last year that had 450 hrs, and the thing
that was the most obvious was the head gaskets.....they
were pretty much toast between the cylinders.
that was the most obvious was the head gaskets.....they
were pretty much toast between the cylinders.
#10
Registered
New motor is running strong and back in the little Donzi to get me to the Reindeer Games later this season....
At least get a leak down and compression check on the motors as is...and have an experienced Merc or Motor Guy look them over... its worth it...
Those are great motors in that boat...really wake it up compared to stock offering of that vintage...
Good Luck
Danny