New 1987 21BR Owner
New 1987 21BR Owner
Barring any last minute complications in the sale I'll be picking up an '87 21BR this weekend. She needs some love both mechanically and cosmetically but I think she's going to clean up nicely. I searched through the site and it looks like there are number of older 21br owners here. Feel free to give me a shout and share any tips, tricks or whatever.
Cheers!
Cheers!
You do not have the required permissions to view the files attached to this post.
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
-
MarkB05-200
- Lieutenant

- Posts: 27
- Joined: Wed Jul 15, 2020 4:35 pm
- Location: New Mexico
- Contact:
Re: New 1987 21BR Owner
Congrats! I'm new here too and recently picked up my first Cobalt. Hows the motor and drive?
2005 Cobalt 200BR
Re: New 1987 21BR Owner
Engine has issues with the Distributor or MSD ignition setup so it's not running right now. Drive is supposed to be good but I haven't been able to test it yet. I'm hoping for the best. The investment was minimal.
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
- Location: Antioch, IL
- Contact:
Re: New 1987 21BR Owner
MSD is notorious for causing issues. I’d rip that stuff out and put the Thunderbolt setup back on (I assume it’s a Merc 260?), I bet that gets it running.
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- AsLan7
- Fleet Admiral

- Posts: 11458
- Joined: Sat Jul 29, 2017 10:58 am
- Location: Erie PA
- Been thanked: 1 time
- Contact:
Re: New 1987 21BR Owner
.
Hey NWAB. Welcome to the Cobaltchat forum. So glad you found us!
Thanks for the pic. What size engine? 350?
Again welcome aboard mate!
.
Hey NWAB. Welcome to the Cobaltchat forum. So glad you found us!
Thanks for the pic. What size engine? 350?
Again welcome aboard mate!
.
You do not have the required permissions to view the files attached to this post.
2002 Cobalt 262
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
Re: New 1987 21BR Owner
Yep, it's the 350. It was rebuilt at some point but not entirely sure how long ago... The seller was suggesting I replace the MSD with a self-contained HEI distributor. Thoughts?
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
- Location: Neenah,Wi
- Contact:
Re: New 1987 21BR Owner
I've heard plenty of good things converting to the hei. Do it.
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
- AsLan7
- Fleet Admiral

- Posts: 11458
- Joined: Sat Jul 29, 2017 10:58 am
- Location: Erie PA
- Been thanked: 1 time
- Contact:
Re: New 1987 21BR Owner
Agreed. Do it...and congrats on your new to you baby.

2002 Cobalt 262
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
&
2005 Cobalt 263
496 MagHO
(sold )
Erie, PA
Currently boatless (for now)
will fly for food
(CChat moderator)
Re: New 1987 21BR Owner
Thanks! I need to do some research on which one to purchase as I've never replaced an entire distributor before. Maybe this one? https://www.jegs.com/i/Pertronix/751/D200811/10002/-1
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
Re: New 1987 21BR Owner
Made it home with the boat this evening! I've got lots of cleaning ahead of me this weekend.
You do not have the required permissions to view the files attached to this post.
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
- akorcovelos
- Vice Admiral

- Posts: 2981
- Joined: Mon Sep 10, 2018 10:07 pm
- Location: Antioch, IL
- Contact:
Re: New 1987 21BR Owner
Keep the progress pics coming!
1996 252 Whipple tuned 454 Magnum MPI, 496 exhaust, Corsa Captains Call, B3 w/Simrek drive shower.
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
‘Direct Deposit Too’
Antioch, IL
Fox Chain O' Lakes
- Big Block Power
- Fleet Admiral

- Posts: 17930
- Joined: Sat May 07, 2016 8:05 pm
- Location: Neenah,Wi
- Contact:
Re: New 1987 21BR Owner
X2
03Cobalt220 8.1gxi DP
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
"Kids in Tow2"
"Pot The Jus" Originator :-)
Neenah Wi
#ItsBu'sfault
#FARCON Marine CC Core!
Re: New 1987 21BR Owner
Lot's of shopvac and powerwashing today. Soo many leaves! Will transition into more hand washing tomorrow now that I've got must of the crud off.
Does anyone know if the ski lockers in these models have drains? I didn't see one before washing and ended up having to bail a lot of water out of it after washing.
Does anyone know if the ski lockers in these models have drains? I didn't see one before washing and ended up having to bail a lot of water out of it after washing.
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
Re: New 1987 21BR Owner
Nice boat good luck with the motor
Both HEI And Thunderbolt are good ignitions for marine application
The only thing to be careful of is the distributor gear
If it’s an 87 block it’s a flat tappet cam, if it’s a later block an running a roller cam you need to run a brass or nylon distributor gear
Running the standard gear from a flat tappet cam distributor on a billet roller cam will get destroyed putting metal thru your motor
Found this out the hard way
Good luck great looking boat
Both HEI And Thunderbolt are good ignitions for marine application
The only thing to be careful of is the distributor gear
If it’s an 87 block it’s a flat tappet cam, if it’s a later block an running a roller cam you need to run a brass or nylon distributor gear
Running the standard gear from a flat tappet cam distributor on a billet roller cam will get destroyed putting metal thru your motor
Found this out the hard way
Good luck great looking boat
Re: New 1987 21BR Owner
Interesting. I had a thread going over on iBoats and the guys were recommending Delco EST Kits but no mention of the distributor gear type. I'll have to research this further. Thanks..Bleil05 wrote: Sat Jul 18, 2020 10:07 pm Nice boat good luck with the motor
Both HEI And Thunderbolt are good ignitions for marine application
The only thing to be careful of is the distributor gear
If it’s an 87 block it’s a flat tappet cam, if it’s a later block an running a roller cam you need to run a brass or nylon distributor gear
Running the standard gear from a flat tappet cam distributor on a billet roller cam will get destroyed putting metal thru your motor
Found this out the hard way
Good luck great looking boat
1987 Cobalt 21BR
Beaver Lake, Arkansas
Beaver Lake, Arkansas
Who is online
Users browsing this forum: Semrush [Bot] and 27 guests
