318 Modifications

[Swamp Dawg]

For those of you with the standard 318 Industrials in your bombardiers what kind of performance can you squeeze out of them.  Has anybody played with cams or switched to 4 barrel carb?  Any idea what the Hp and Tq ratings this motor has.

[Skenman]

Yes,
Bought a new Weiand 4bbl mani, ( don't fit, front of thermo housing hits back of water pump.)
mine a 313 industrial dodge poly head engine 1962. )
So Itraded a guy in the USA for a stock 4bbl cast intake and bolted a 650 cfm Edelbrock off road
carb on. had to make new throttle linkage hook ups, water hookups, etc..
Nite and day performance. 35% more fun. not much more gas either !!!!

skenman
1962 wide gauge.

[Skenman]

I have a spec sheet for 1962
15 passenger wide, 313 v8 = 145hp.
4400lbs, width 78" 4:10 ratio
I have the 4bbl = 30 hps
and headers = 10 hp
electronic ignition..
====  be pushing 185 - 200 hp.
now that is 1962 specs.  don't know what the dyno would say ?

12 passenger narrow 251 6 cyl = 115hp
4200lbs, width 59"  4:10 ratio.

[Swamp Dawg]

Thanks for that info, sounds like a real track buster!  You left the stock cam in there?

[Skenman]

Same original cam, i am running an electric fuel pump, and
an aluminum gas tank 104 liter, that i have mounted outside, between the
radiator and snow cover door,, NO MORE VAPOUR LOCKING, or rusty filters.

[Swamp Dawg]

Thats a good idea, I heard that vapour locking is a big problem on these machines.  Do you have any pictures of your bombardier?  I think we would all like to see it.

[Skenman]

yo Swamp Dog.
I'd like to post some pics, and also see other guys and gals machines.
I cannot figure out how,,on this knowledge box, don't want to screw anything up here.

Skenman
62 wide

[Skenman]

correction Swamp Dawg,, sorry

[Swamp Dawg]

I set up a post for you with pictures.

[Snowbusman]

IND313
Does any one out there have the factory specs for the camshaft on a stock 313. Looking for Lift and duration.
Regards
Bob Sanders
Sault Ste Marie, Ontario

[Skenman]

I have a bookmarked site for the Poly 318,, we have 313 in Canada apparently.

autos.groups.yahoo.com/groups/318poly/

If that doesnt work , send me ur email and Ill send a link.

[Snowbusman]

Thanks there Skenman
I finally got the numbers from a rebuilder.
Took a lot of E Mails to finally find the information. Thank heavens for the internet.

[Snowbusman]

We searched high an low for a new cam amd finally sent the original out for regrind. If any one wants the numbers I can supply them.
If I wasn't such a fan of poly engines, I would have never gone this way.
Oh well it sure been interesting

[Vic]

We are having trouble with overheating with or c12 with 318 chrysler with auto transmission.  We thought a cowling around fan would help.  Does anyone have experience they can share with us.  We are in Southern Ontario near kitchener.  It was 2 degrees with heavy but not deep snow.   The cab was very warm.  Is there any way to control the heat or is it strictly a funtion of the motor heta level?

[kpm]

a cowling helps,and a six blade fan...and be sure to put a new thermosat...they can get nice and toasty inside when there working a bit,hard to control the heat..open a window or the hatch..
                                                                       kpm