reverse rotation engine
03-08-2013 | 04:23 PM
#31
Registered
Joined: Dec 2002
Posts: 3,363
Likes: 165
From: Providence,RI
I have a reverse rotation Crane 741 cam and special cut distributor gear. This gear will mount on any .500 distributor shaft.
This drives the oil pump the same way. Yes the same way!
This works with a standard timing chain.
The firing order is just opposite.
This will make the Crank run in the reverse direction
I have never had to change the rear main seal. Yes same seal!
The pistons were the same exact Ross part number
for the counter as normal rotation.
I have detailed threads posted years ago on all this.
if anyone could use the cam just pm me.
KR
This drives the oil pump the same way. Yes the same way!
This works with a standard timing chain.
The firing order is just opposite.
This will make the Crank run in the reverse direction
I have never had to change the rear main seal. Yes same seal!
The pistons were the same exact Ross part number
for the counter as normal rotation.
I have detailed threads posted years ago on all this.
if anyone could use the cam just pm me.
KR
03-08-2013 | 04:43 PM
#32
Registered
Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
I don't know what the big hangup here about a reverse rotation engine is. They been around for DECADES. I know a few guys who were running 1000+hp reverse rotation engines in 39 Ocean express cats, 32 hustlers, with arneson 1600 series drives. Not to mention a million cruisers are still running reverse rotation engines.
http://www.marineengines4less.com/bu...neengines.html type ''502'' in the search box. New GM base engine, avail in reverse rotation also.
Another
http://affordablemarine.com/gm.htm
another
http://wolfiesenterprises.com/8200base.htm
another
http://www.miamimarina.com/frontend/...1D8A?id=217561
http://www.marineengines4less.com/bu...neengines.html type ''502'' in the search box. New GM base engine, avail in reverse rotation also.
Another
http://affordablemarine.com/gm.htm
another
http://wolfiesenterprises.com/8200base.htm
another
http://www.miamimarina.com/frontend/...1D8A?id=217561
03-10-2013 | 09:40 AM
#33
Registered
Joined: Nov 2005
Posts: 4,554
Likes: 3
From: Fredericksburg, Va
Cam should spin the same way as normal. It's the crank that spins backward. That's why there is only 2 gears and not 2 gears and a chain timing set. The dist turns the same way you just put the plugs wires on it backward. If you spin the cam backward not only would you need a custom dist but you would also need a custom oil pump and unless someone builds it for you, you are not going to find them.
03-10-2013 | 12:16 PM
#34
Registered
Joined: Jan 2005
Posts: 3,570
Likes: 127
From: Pasadena, MD
thats the old way they did with gear to gear, not with the gen VI engines, they use a timing chain, cam has a reverse cut gear along with the cam, now this is where the problems come up...when you pull down on the dist shaft by reversing it...there is no thrust load bushing to absorb the load..kills std dist in a very short time !!! I did 4 before I traced down the "special made with extra load bearing" EST dist..the old gear to gear to me was a better deal but was told the wider gears would not clear the newer timing covers.
