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R5 with 8.2l Merc

Posted: Mon Jun 15, 2020 10:55 pm
by ocurtis
Curious if anyone on here has the R5 with the 8.2, specifically the 430 hp option. Just curious on performance!

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 6:16 am
by Big Block Power
Boy not sure if I've seen one. Maybe 1. Most got the 6.2 380 or 430. Let's wait and find out. I think a dealership here in Wisconsin might have one in Sister Bay WI.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 10:47 am
by Motex2011
ocurtis wrote: Mon Jun 15, 2020 10:55 pm Curious if anyone on here has the R5 with the 8.2, specifically the 430 hp option. Just curious on performance!
I have the 8.2 rated at 380 HP, but I would love to know how the 430 performs. My 2014 with tower will hit about 52 with 2 people and full tank of gas. Maybe, we will see one at the regatta and we can have a nice little drag race to see how much better it performs.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 12:33 pm
by TR5
I also have the 8.2, 380 HP on our R5 love the power all the way through the throttle. We have the tower and I pushed it last weekend for a brief couple of seconds we were at 55. Are old boat was a 226 with 350 mag and the torque is so much more noticeable in the Big Block. Big Plus when you turn the key at the dock everyone just drops their Jaws when that Merc lights off.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 12:55 pm
by AsLan7
TR5 wrote: Tue Jun 16, 2020 12:33 pm I also have the 8.2, 380 HP on our R5 love the power all the way through the throttle. We have the tower and I pushed it last weekend for a brief couple of seconds we were at 55. Are old boat was a 226 with 350 mag and the torque is so much more noticeable in the Big Block. Big Plus when you turn the key at the dock everyone just drops their Jaws when that Merc lights off.
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I think you (and motex) mean 6.2 380 horse.

Merc (and/or VP) never made an 8.2 (502 cubic inch) Fuel injected 380 horse marine application.

.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 2:31 pm
by tgrace98
AsLan7 wrote: Tue Jun 16, 2020 12:55 pm
TR5 wrote: Tue Jun 16, 2020 12:33 pm I also have the 8.2, 380 HP on our R5 love the power all the way through the throttle. We have the tower and I pushed it last weekend for a brief couple of seconds we were at 55. Are old boat was a 226 with 350 mag and the torque is so much more noticeable in the Big Block. Big Plus when you turn the key at the dock everyone just drops their Jaws when that Merc lights off.
.
I think you (and motex) mean 6.2 380 horse.

Merc (and/or VP) never made an 8.2 (502 cubic inch) Fuel injected 380 horse marine application.

.

That is incorrect sir. When GM discontinued the 496 motor Mercury instead of going to the gen 4 and 5 GM marine motors they went their own way and started building their own 502. And offer it in either 380hp or 430hp as the HO. You can still order them today in any R series cobalt.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 3:16 pm
by TR5
this is a quick shot of the 8.2L

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 3:43 pm
by AsLan7
tgrace98 wrote: Tue Jun 16, 2020 2:31 pm
AsLan7 wrote: Tue Jun 16, 2020 12:55 pm
TR5 wrote: Tue Jun 16, 2020 12:33 pm I also have the 8.2, 380 HP on our R5 love the power all the way through the throttle. We have the tower and I pushed it last weekend for a brief couple of seconds we were at 55. Are old boat was a 226 with 350 mag and the torque is so much more noticeable in the Big Block. Big Plus when you turn the key at the dock everyone just drops their Jaws when that Merc lights off.
.
I think you (and motex) mean 6.2 380 horse.

Merc (and/or VP) never made an 8.2 (502 cubic inch) Fuel injected 380 horse marine application.

.

That is incorrect sir. When GM discontinued the 496 motor Mercury instead of going to the gen 4 and 5 GM marine motors they went their own way and started building their own 502. And offer it in either 380hp or 430hp as the HO. You can still order them today in any R series cobalt.
.
Wow. I stand corrected. I never knew there was a "detuned" 8.2L offered. ...always thought when they came out with the MPI 415 hp 502 "MAG" cubic inch in the 90's they kept the horsepower in the 400's and above for future 502 iterations....especially when Merc started producing these massive big blocks again under the 8.2L moniker. I'm showing my age. :lol:

What else is different with the engine internals between the 8.2L 380hp and the 430HP?

...and thank you for the update! 8-)

Re: R5 with 6.2 430 hp

Posted: Tue Jun 16, 2020 4:02 pm
by MAINDOG24
2019 R5 6.2 430hp
Two people 1/2 tank fuel.
60 mph

Re: R5 with 6.2 430 hp

Posted: Tue Jun 16, 2020 4:09 pm
by AsLan7
MAINDOG24 wrote: Tue Jun 16, 2020 4:02 pm 2019 R5 6.2 430hp
Two people 1/2 tank fuel.
60 mph
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Hey MD24. Welcome to the CobaltChat forum. So glad you found us!

Any pics of your R5?

Where are you boating?

Again, welcome aboard mate!

.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 4:38 pm
by MAINDOG24
Thanks
Boating at Table Rock Lake Mo.
I will send photo"s
Soon

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 6:33 pm
by Big Block Power
TR5 wrote: Tue Jun 16, 2020 3:16 pm this is a quick shot of the 8.2L
What a beautiful thing!!

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 9:06 pm
by ocurtis
Got some good response! I am planning an R5 or 242 wss in my future, and the 8.2 Merc is a must. I am hoping to find one that is 4-5 years old with a tower.
Any feedback on the Volvo 380 option Inc comparison to the Merc? My main concern is service centers

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 9:37 pm
by tgrace98
ocurtis wrote: Tue Jun 16, 2020 9:06 pm Got some good response! I am planning an R5 or 242 wss in my future, and the 8.2 Merc is a must. I am hoping to find one that is 4-5 years old with a tower.
Any feedback on the Volvo 380 option Inc comparison to the Merc? My main concern is service centers
About 85% of the r series Cobalt’s have the volvo motors. They are the new series gm motors so service is not hard to find.

I have the 6.2 vp 380 in my R7 and love it. I came from a big block and the new small blocks have every bit the power the old big blocks had.

Re: R5 with 8.2l Merc

Posted: Tue Jun 16, 2020 9:42 pm
by ocurtis
tgrace98 wrote: Tue Jun 16, 2020 9:37 pm
ocurtis wrote: Tue Jun 16, 2020 9:06 pm Got some good response! I am planning an R5 or 242 wss in my future, and the 8.2 Merc is a must. I am hoping to find one that is 4-5 years old with a tower.
Any feedback on the Volvo 380 option Inc comparison to the Merc? My main concern is service centers
About 85% of the r series Cobalt’s have the volvo motors. They are the new series gm motors so service is not hard to find.

I have the 6.2 vp 380 in my R7 and love it. I came from a big block and the new small blocks have every bit the power the old big blocks had.
and of those 85%, 90% are the 300hp, 15% are the 350, and 380 are impossible to find!

I would consider an R7 too. I really need to narrow down at some point haha! If I could spend $150k and order my perfect boat this would be a lot easier!