It is currently Thu Mar 28, 2024 7:49 am




Reply to topic  [ 11 posts ] 
 modifing a 35 swomp 
Author Message
MMT Member

Joined: Mon Apr 28, 2014 9:38 pm
Posts: 14
Post modifing a 35 swomp
I'm running an 1856 weldbilt with a 1000# load and can only get 3950 rpm max. When I run a lighter load I can get 4150- 4200. Any mods that would help with the heavy load?


Fri Dec 01, 2017 2:11 pm
Profile
MMT 1000 Club

Joined: Mon Dec 31, 2012 11:07 pm
Posts: 4820
Location: West Monroe, LA
Post Re: modifing a 35 swomp
It's a 35 Briggs. The same mods we talk about for the surface drives work for that one too, since it's the same engine.

#CFFITR
#TheGhostBoat
#whoneedsphysicsihaveamudmotor


Fri Dec 01, 2017 4:49 pm
Profile
MMT F.E.
User avatar

Joined: Tue Aug 26, 2014 10:36 am
Posts: 822
Location: Jefferson TX
Post Re: modifing a 35 swomp
IMO heads carb and exhaust will show lots of improvement. If its an EFI, Heads and exhaust, get it "dialed in". More in and out, letting the motor "breathe".

I did a 2011 GTR(heads carb exhaust) went from 25 with 2 to 30+ with 2--Motor turned the same prop to higher rpms. LT should show improvement in rpm increase empty and loaded.

_________________
SEAARK FX 2472 CC Merc 150HP 4Stroke(CypressCadillac)
Uncle J Custom - 19x54 CC Skiff w/40XD GTR


Sat Dec 02, 2017 9:16 am
Profile
MMT 1000 Club

Joined: Mon Sep 19, 2011 6:32 pm
Posts: 1490
Location: south Florida
Post Re: modifing a 35 swomp
Often heard about modding an LT. Would that mean the 35 LT could turn a bigger prop? That is the big question mark on LT's, the fact there is no gear reduction...excepting maybe a MB SLT? Would be good to know if anyone has upped the 35/37 SLT? I was driving my 26.5 EFI this past weekend while scouting- stock motor on a 1648 grizzly- and cruising at 21 mph, not too bad, of course just me and no real hunting load. A couple more mph would be nice, but how much $ are we talking? I think I personally would put the money into another hull, a true flat, to get better performance. I actually drive the speed limit on the road, so 20 mph feels good and I enjoy the drive in the marsh as is.

_________________
Sailing in the sawgrass /1648 grizzly and Swomp 26.5 EFI


Sun Dec 03, 2017 5:47 pm
Profile
MMT 1000 Club

Joined: Mon Dec 31, 2012 11:07 pm
Posts: 4820
Location: West Monroe, LA
Post Re: modifing a 35 swomp
Probably no need for a bigger prop, but you can definitely add cup and/or pitch to either dig better or get more speed after mods.

#CFFITR
#TheGhostBoat
#whoneedsphysicsihaveamudmotor


Sun Dec 03, 2017 10:40 pm
Profile
MMT F.E.
User avatar

Joined: Tue Aug 26, 2014 10:36 am
Posts: 822
Location: Jefferson TX
Post Re: modifing a 35 swomp
I second that, make turning a prop with more cup or more pitch at a higher rpm-increasing speed!

_________________
SEAARK FX 2472 CC Merc 150HP 4Stroke(CypressCadillac)
Uncle J Custom - 19x54 CC Skiff w/40XD GTR


Mon Dec 04, 2017 9:55 am
Profile
MMT 1000 Club
User avatar

Joined: Thu Jan 31, 2013 5:42 pm
Posts: 1913
Location: Conroe tx
Post Re: modifing a 35 swomp
Modded longtail , Hmmmm :D

H finn

_________________
Ole black water keep on rolling

18x54 Uncle J -GTR - with the koolaid
Back H2o SWOMP 23 SS stage 2 15x36 GD Duck Skiff GATOR
GATOR GLIDE PROSTAFF
BACKWATER PROSTAFF
http://www.gatorglide.com

Coupe rest in peace brother


Mon Dec 04, 2017 10:38 am
Profile
MMT Elite Member
User avatar

Joined: Mon Feb 06, 2012 6:13 pm
Posts: 5605
Location: D'town, LA
Post Re: modifing a 35 swomp


Mon Dec 04, 2017 11:43 am
Profile
MMT 1000 Club

Joined: Mon Sep 19, 2011 6:32 pm
Posts: 1490
Location: south Florida
Post Re: modifing a 35 swomp
Huck, what combo are you driving today? I remember the numbers for your 23 HP LT on that 15' skiff. I am mostly happy with my "compromise" of a 1648 grizzly and 26.5 BW, and as it is usually just me hunting, I don't really need to go bigger, in fact, I might eventually drop down to a 23 HP (either LT or SD Copperhead) and a lighter hull. If I get another lab in a year or two I will still have plenty of space. :geek:

_________________
Sailing in the sawgrass /1648 grizzly and Swomp 26.5 EFI


Tue Dec 05, 2017 7:27 am
Profile
MMT 1000 Club
User avatar

Joined: Thu Jan 31, 2013 5:42 pm
Posts: 1913
Location: Conroe tx
Post Re: modifing a 35 swomp

_________________
Ole black water keep on rolling

18x54 Uncle J -GTR - with the koolaid
Back H2o SWOMP 23 SS stage 2 15x36 GD Duck Skiff GATOR
GATOR GLIDE PROSTAFF
BACKWATER PROSTAFF
http://www.gatorglide.com

Coupe rest in peace brother


Tue Dec 05, 2017 10:59 am
Profile
MMT 1000 Club

Joined: Mon Sep 19, 2011 6:32 pm
Posts: 1490
Location: south Florida
Post Re: modifing a 35 swomp
Ok! My second boat was a 1544 alumaweld square jon all-welded, .090 gauge that really did well with a 25 kohler. I will not go skinnier, my first was a 1436 jon.

_________________
Sailing in the sawgrass /1648 grizzly and Swomp 26.5 EFI


Wed Dec 06, 2017 12:44 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 11 posts ] 

Who is online

Users browsing this forum: No registered users and 132 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: