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View Full Version : BIG engine reliablity question?/speed needed


BarefootWisco
03-27-2011, 09:46 PM
I am shopping around for a 2006-2008 MC 197 and I need the speed for footing--45 mph strong but how are the bigger engines--LQ-9 and bigger?? I know someone working for a GM service dept and he tells me that the LQ-9 is a northstar engine and is notorious for oil leaks in their cars and has gone on for the last handful of years with still the same issue. If you have thoughts on getting another 197 set up without the big engine too let me know.
Thanks for your time

Engine Nut
03-27-2011, 10:21 PM
I am shopping around for a 2006-2008 MC 197 and I need the speed for footing--45 mph strong but how are the bigger engines--LQ-9 and bigger?? I know someone working for a GM service dept and he tells me that the LQ-9 is a northstar engine and is notorious for oil leaks in their cars and has gone on for the last handful of years with still the same issue. If you have thoughts on getting another 197 set up without the big engine too let me know.
Thanks for your time

None of the 6.0L engines ... LQ9, LY6 or L96 that we have been using have exhibited chronic oil leakage issues. The LQ9 is a completely different engine than the Northstar and has an excellent service history.

FourFourty
03-28-2011, 10:29 AM
The LQ-9 is not a Northstar engine...... And from what I have heard/seen, all variations of the 6.0 have been good engines in cars, trucks, and boats...

Jim@BAWS
03-28-2011, 10:32 AM
I am shopping around for a 2006-2008 MC 197 and I need the speed for footing--45 mph strong but how are the bigger engines--LQ-9 and bigger?? I know someone working for a GM service dept and he tells me that the LQ-9 is a northstar engine and is notorious for oil leaks in their cars and has gone on for the last handful of years with still the same issue. If you have thoughts on getting another 197 set up without the big engine too let me know.
Thanks for your time

http://www.bayareawatersports.com/searchengine/Details.aspx?diid=5397809&bvdid=3121&type=AN&indid=1&sortCol=Length&sortDir=DESC&

http://www.bayareawatersports.com/searchengine/Details.aspx?diid=2407495&bvdid=3121&type=AN&indid=1&sortCol=Length&sortDir=DESC&


http://www.bayareawatersports.com/searchengine/Details.aspx?diid=1201807&bvdid=3121&type=AN&indid=1&sortCol=Length&sortDir=DESC&

http://www.bayareawatersports.com/searchengine/Details.aspx?diid=3043614&bvdid=3121&type=AN&indid=1&sortCol=Length&sortDir=DESC&

Call me for INFO on all 4

Jim

Andyg
03-28-2011, 12:51 PM
I have had two boats with the LY6 engine and I have not had any major mechanical issues with either of them. I had one coil that had to be replaced but that is it.

From a speed standpoint the LY6 will get you to 45-48 mph. It all depends on what prop you use and the natural variations in engine and hull perfumance. It works for footing, but nothnig beats the my old boat for barefooting, 1997 PS190 with the LT-1.

I have not personally been in a 197 with a 6.0 ltr that has hit 50 mph on a GPS. People on here have sworn that their LQ9 were 50+ mph boats, but I am sceptical that there is a 197 that can hit 50 mph without a Supercharger or an 8.1L engine. Or that is so over propped that you have no hole shot.

corey
03-28-2011, 12:53 PM
Yep, the 6.0 is the way to go. I can't think of a single oil leakage issue, we did have two with bad coil packs but they were bad from hour 1 and no issues once replaced.

http://www.waterskis.com/2007-MasterCraft-ProStar-197-p/2007_mastercraft_prostar_197_.htm

2RLAKE
03-28-2011, 01:01 PM
i had a 2002 TT 197 LQ9 and it could pull me and my 275 little buddy well over 45

skilouisiana
06-05-2011, 01:26 PM
Is there any truth to the original post - that the Northstar is notorious for oil leaks? I started another thread inquiring about the reliability of the Northstar, but no responses as yet. The first post here has me a little concerned re the Northstar...

Thanks.

Engine Nut
06-05-2011, 05:02 PM
Is there any truth to the original post - that the Northstar is notorious for oil leaks? I started another thread inquiring about the reliability of the Northstar, but no responses as yet. The first post here has me a little concerned re the Northstar...

Thanks.

Think you might be confused. The north star engine that we built has been out of production for a long time and we really only sold a very small number of them. The north star engine was a 4.6 liter engine with 4 valves per cylinder. I think you may be thinking of the LQ9 which was also a Cadillac engine but it was a 6.0L engine. The LQ9 was a great engine and did not have an oil leak issue.

skilouisiana
06-05-2011, 06:29 PM
Yeh, then i'm definitely confused. The owner of the boat has indicated the motor is "TR Northstar Ignition 5.7L V8 330H.P" It's a 2001 2009. Don't know the Hull ID. I'll get it.

I know a fair amount about a few things, but what I know about motors wouldn't fill a thimble. Obviously.

Thank you.

Engine Nut
06-05-2011, 07:32 PM
Yeh, then i'm definitely confused. The owner of the boat has indicated the motor is "TR Northstar Ignition 5.7L V8 330H.P" It's a 2001 2009. Don't know the Hull ID. I'll get it.

I know a fair amount about a few things, but what I know about motors wouldn't fill a thimble. Obviously.

Thank you.

He has an engine called an LTR which is a conventional 5.7L engine ... Predecessor of the current MCX. It used the coil pack ignition that we used on the LT1 ... Which came from the Cadillac Northstar. That engine does not have a history of oil leaks either.

skilouisiana
06-05-2011, 09:17 PM
Thank you.