Crossover vs. Circulating Water Pump
#11
Guest
Posts: n/a
Crossover VS Circulating water pump
CP Performance now offers a crossover kit for MPI engines that use a serpentine belt. It comes with the thermostat housing , thermostats, ports to install your engine coolant temperature sensor. A pulley is also attached to the crossover so you can use your same serpentine belt. I requested the 160 t-stats which are standard on later MPI engines . The 140 t-stats which they offer will not let you out of the enrichment mode, unless you install a 400 OHM resistor in the yellow wire of the ECT to trick the computer. This may or may not be a problem depending on whether you boat in a cold climate or not.
#12
Registered
![Default](/forums/images/icons/icon1.gif)
I like the crossover if only to clean up that ugly t-stat housing that merc puts on the motor. Temperature and pressure issues are easily delt with. For big HP crossovers are a must for proper cooling. My .02!!
#14
![Default](/forums/images/icons/icon1.gif)
I got a used cross-over with thermostat by-pass I took off a stock 502mpi mag. Put the stock back on because motor ran to cold. Could have used a resistor I guess but it will not warm up at idle. Water pressure is/can be problem you will need to check it. You will not feel or see any gains in speed only a cleaner front of engine look. Been there done that.
![Big Grin](/forums/images/smilies/biggrin.gif)
#15
Registered
Join Date: Sep 2001
Location: Lake St. Clair
Posts: 353
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
If you're starting from scratch, and looking for a cost effective / easy to mount pump, look at a johnson. It bolts right to, and is driven off of the crank.
I needed pumps when I put my SBs in a boat with bravo's & was on a budget. Anyways, I think for 2 pumps (they are made of brass, not plastic) & the brackets (you can probably make this and save 20-30 bucks), it cost about $375 shipped.
They also make it VERY easy to change the impellers.....I took them out when winterizing & it took me about 2-3 minutes a pump, and the replacement pumps (impellers) run about $25. The only thing is that they stick out in front of the engine a bit.
It is a very easy / cost effective set up though, you just gotta re-route a bit of plumbing. I think they are used on ski-boats, but I wouldn't hesitate to use them again !
26 scarab, and a few others have seen them, and can comment on them.
Here's an addy where you can see them:
http://marineengineparts.com/shopsit...ml/page84.html
RJ
I needed pumps when I put my SBs in a boat with bravo's & was on a budget. Anyways, I think for 2 pumps (they are made of brass, not plastic) & the brackets (you can probably make this and save 20-30 bucks), it cost about $375 shipped.
They also make it VERY easy to change the impellers.....I took them out when winterizing & it took me about 2-3 minutes a pump, and the replacement pumps (impellers) run about $25. The only thing is that they stick out in front of the engine a bit.
It is a very easy / cost effective set up though, you just gotta re-route a bit of plumbing. I think they are used on ski-boats, but I wouldn't hesitate to use them again !
26 scarab, and a few others have seen them, and can comment on them.
Here's an addy where you can see them:
http://marineengineparts.com/shopsit...ml/page84.html
RJ
#16
![Default](/forums/images/icons/icon1.gif)
Originally posted by Ratchet
If you're starting from scratch, and looking for a cost effective / easy to mount pump, look at a johnson. It bolts right to, and is driven off of the crank.
It is a very easy / cost effective set up though, you just gotta re-route a bit of plumbing. I think they are used on ski-boats, but I wouldn't hesitate to use them again !
26 scarab, and a few others have seen them, and can comment on them.
Here's an addy where you can see them:
http://marineengineparts.com/shopsit...ml/page84.html
RJ
If you're starting from scratch, and looking for a cost effective / easy to mount pump, look at a johnson. It bolts right to, and is driven off of the crank.
It is a very easy / cost effective set up though, you just gotta re-route a bit of plumbing. I think they are used on ski-boats, but I wouldn't hesitate to use them again !
26 scarab, and a few others have seen them, and can comment on them.
Here's an addy where you can see them:
http://marineengineparts.com/shopsit...ml/page84.html
RJ
that is what was on my MasterCraft. worked great ran a hot water shower of it also. Rag's
#17
Registered
Join Date: Sep 2001
Location: Lake St. Clair
Posts: 353
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Originally posted by ragtop409
Yep! SHRP105
that is what was on my MasterCraft. worked great ran a hot water shower of it also. Rag's
Yep! SHRP105
that is what was on my MasterCraft. worked great ran a hot water shower of it also. Rag's
JP10-24232-1
I think cause it was brass instead of aluminum, & because it had a wider impeller.