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View Full Version : Indmar, Pleasurecraft, Etc...?


O2BESOHUGE
07-06-2011, 09:45 AM
I Know This Is A Stupid Question - But Without Any Marking On An Engine, How Do Youtell The Difference Between Types? Inmar? Pleaseurecraft, Etc.?

Which Is Mine?
Thanks!

CantRepeat
07-06-2011, 10:00 AM
That is an Indmar 351 and if the boat is older then 92 I'm gonna guess it's the 285HO model. If you look at the front of the heads and see 3 little one inch raised cast marks it's the 285HP model.

O2BESOHUGE
07-06-2011, 10:05 AM
Thanks! But Where Would It Say Indmar? WHAT LETS YOU KNOW THE BRAND?

wrobins1
07-06-2011, 10:37 AM
"Indmar" is casted into the intake manifold on my engine.

east tx skier
07-06-2011, 10:57 AM
From the carpet, I'm guessing a 91. If it is a 351HO, it looks to have had the carb changed to a 4160.

You can tell it's an Indmar because the water circulating pump is located just aft of the ski pylon with the alternator located on the front-starboard side. A PCM engine has its water pump located on the front-starboard side of the engine and the alternator on the front-port side of the engine about midway up.

TonyB
07-06-2011, 11:44 AM
If I recall, the silver lable visible on the the starboard valve cover has some information.

I have a 91 ProStar 190 with Indmar Ford 351. That photo looks EXACTLY like mine.

east tx skier
07-06-2011, 12:05 PM
You can see the different location of the alternator as opposed to the Indmar location in this picture.

http://ww2.justanswer.com/uploads/keysync/2010-06-21_160820_DSC00659.jpg

You can see the water pump location in this one (different motor, but same idea).

https://lh6.googleusercontent.com/-cJ51PTGaXCc/Sl3oTW2nnWI/AAAAAAAACXo/OGD10mW49AE/s800/GT40.jpg

O2BESOHUGE
07-06-2011, 03:22 PM
From the carpet, I'm guessing a 91. If it is a 351HO, it looks to have had the carb changed to a 4160.

You can tell it's an Indmar because the water circulating pump is located just aft of the ski pylon with the alternator located on the front-starboard side. A PCM engine has its water pump located on the front-starboard side of the engine and the alternator on the front-port side of the engine about midway up.

how would you tell from the pic that the carb has been changed? with the cover on it? whats more reliable? the indmar or pcm? thanks!

east tx skier
07-06-2011, 03:33 PM
how would you tell from the pic that the carb has been changed? with the cover on it? whats more reliable? the indmar or pcm? thanks!

If it's a 91 and from the carpet and the big muffler behind the engine, I'm guessing that it is, the 4160 was OEM (not changed). If it's a 92 and not a 351HO, the 4160 would be OEM (not changed). If it's a 92 or 93 and has the 351HO, from looking at the picture, I'd say the carb has been changed (OEM was a 4010 with a dual feed fuel line). The dual feed was along the starboard side of the carb and, if I recall correctly, the fuel line from the pump went to the starboard side. I can see the fuel line in that picture, which appears to go to the front-port side of the carb. That's what I'm basing this on.

Again, if it's a 91, things become much more certain.

Do you have the serial number? That would make things easier.

Both PCM and Indmar do reliable marinizations of the Ford and Chevy engines. They are a little different to work on, but I have had good experiences with the Indmar and PCM Ford engines both from a performance and maintenance perspective. That second PCM picture above is mine.

MasterCraft used PCM through about 1987 or so, at which point they switched to Indmar, which continued through 2011.

east tx skier
07-06-2011, 03:44 PM
-------------SORRY___________

Double Post. :o

east tx skier
07-06-2011, 03:45 PM
Okay, just looked at your profile. I was right. It is a 91. You have an Indmar Ford 351 that is putting out about 240 hp. It should top out at around 43 mph. You almost certainly have a 4160 carb. If you give us the serial number, we can tell you a few more things like the month your boat was built and what transmission you have.

O2BESOHUGE
07-06-2011, 03:51 PM
Thanks Man! You Are Very Knowledgeable About Those! Another Question? Would Removing The Big Muffler At The Rear Of The Engine Help In Any Way With Power?

east tx skier
07-06-2011, 03:56 PM
Leave the muffler alone.

Do the following in this order:

1. Replace the prop with a CNC machined prop (Acme or OJ XMP). About $380
2. Replace the heads with GT-40 or GT-40p heads. A few hundred bucks plus labor if you can find them used.
3. Upgrade the intake manifold to an Edelbrock performer (or some go with the Edelbrock RPM). This will require finding a lower profile flame arrestor. Under $200 plus labor.

You will be amazed at the performance with each one of these changes, which can be done one at a time although the last two you might want to do at the same time since you'll already be under the hood. In the end, you will be pushing close to 300 hp and will have loads of mid range torque. Plus, your boat will remain relatively quiet.

O2BESOHUGE
07-06-2011, 04:06 PM
Already Replaced The Prop The Prop And That Made Tons Of Difference. Whats The Difference In Gt40 And Gt40 P Heads? Ive Seen Them At Ski Dim And Man They Are Expensive FOR NEW ONES!

OK...IVE FOUND SOME ON EBAY FOR ABOUT $300. HOW USED WOULD YOU GO WITH THEM? OR WOULD YOU HAVE THEM REDONE BEFORE PUTTING ONTHE BOAT? THANKS!

east tx skier
07-06-2011, 04:51 PM
I'm not an engine expert. Take this for what it's worth. But from my reading, the GT-40p heads are better performers and were on late 90s explorers with the 5.0L V8. The bolt pattern is slightly different. Check junk yards or look here for $215 free shipping (http://cgi.ebay.com/ebaymotors/FORD-EXPLORER-MOUNTAINEER-302-SBF-GT40P-CYLINDER-HEAD-_W0QQcmdZViewItemQQhashZitem27b514b6b8QQitemZ17054 1758136QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries).

The cast iron GT40 heads are bolt on and are a great upgrade over what you have. Skidim's price is way high. Ebay or Craigslist. If remanufactured, good to go. If not, might want to have them looked at.

jconover
07-06-2011, 08:09 PM
I'm not an engine expert. Take this for what it's worth. But from my reading, the GT-40p heads are better performers and were on late 90s explorers with the 5.0L V8. The bolt pattern is slightly different. Check junk yards or look here for $215 free shipping (http://cgi.ebay.com/ebaymotors/FORD-EXPLORER-MOUNTAINEER-302-SBF-GT40P-CYLINDER-HEAD-_W0QQcmdZViewItemQQhashZitem27b514b6b8QQitemZ17054 1758136QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries).

The cast iron GT40 heads are bolt on and are a great upgrade over what you have. Skidim's price is way high. Ebay or Craigslist. If remanufactured, good to go. If not, might want to have them looked at.

Note that ebay listing was for EACH head.

east tx skier
07-06-2011, 08:37 PM
Note that ebay listing was for EACH head.

Good eye. Huge, hit the junk yards.

ncsone
07-06-2011, 09:37 PM
You can see the different location of the alternator as opposed to the Indmar location in this picture.

http://ww2.justanswer.com/uploads/keysync/2010-06-21_160820_DSC00659.jpg

You can see the water pump location in this one (different motor, but same idea).

https://lh6.googleusercontent.com/-cJ51PTGaXCc/Sl3oTW2nnWI/AAAAAAAACXo/OGD10mW49AE/s800/GT40.jpg

Eastie - glad to see that you clarified which engine in those two pictures is yours. I was afraid I saw a wakeboard in your boat in one of those pictures.

-NCS

east tx skier
07-06-2011, 10:31 PM
That wakeboard is much nicer than mine. Mine has bungee sandals on it. ;)