March 1158 crank dampener installed (underdrive)

[babbage]

Well I had my mechanic install my new March 1158 SFI Fluid filled crank dampener today, with a new hardened $24 ARP crank bolt (90 ft pounds).

Before anyone gives me crap about not doing it myself, I have installed SW headers, brakes, lines, water pump, lower intake, rear head cooling kit and a transmission by myself on my Marauder...;)

What surprised me was that it required a 1 inch shorter belt. The shop got and installed a Dayco Poly V belt for $48 :eek:, that is 91 inches long. Stock is 92" long. Works great. All I had installed was the crank dampener - nothing else.

Anyway so far so good. The March 1158 unit is one piece has a nice black powder coat paint job on it. They say the thick fluid inside helps control vibrations at all rpms, which is why I picked it (read: better than Steeda IMHO) Didn't bump my idle yet, think I might be ok as is.

I got the Dayco 91" belt part number if anyone wants it. Can't wait to drive it some more!

[J.bo]

Got any pics?

[MMBLUE]

Pics or it didn't happen. ;)

[babbage]

http://img.tapatalk.com/aefc33d3-70ae-1cb1.jpghttp://img.tapatalk.com/aefc33d3-701b-8a64.jpg

http://img.tapatalk.com/aefc33d3-7076-b534.jpg

[Blackened300a]

Steeda comes with a bigger diameter waterpump pulley. That's the reason why you needed a shorter belt. Looks great, did you notice a smoother idle?

[MMBLUE]

Very nice Babs. How much $ do one of those go for?

[Blackened300a]

Very nice Babs. How much $ do one of those go for?

$133, but I'm curious why it wont work on a Mach1?

http://www.jegs.com/p/March-Performance/March-1996-04-46L-Mustang-SFI-Approved-Underdrive-Crank-Pulley-Balancer-Combo/762845/10002/-1

[Krytin]

$133, but I'm curious why it wont work on a Mach1?

http://www.jegs.com/p/March-Performance/March-1996-04-46L-Mustang-SFI-Approved-Underdrive-Crank-Pulley-Balancer-Combo/762845/10002/-1

Even the March website doesn't say why!
I'm confused (that's not hard to do anymore!)

[babbage]

Its wrong info on their website! It will work on a Mach1 and Marauder.

[babbage]

Steeda comes with a bigger diameter waterpump pulley. That's the reason why you needed a shorter belt. Looks great, did you notice a smoother idle?

Thanks Paul - Yep, it Spools up faster for sure with little pedal effort. I figured since I already have the more efficient water pump I wouldnt need it..

[babbage]

Very nice Babs. How much $ do one of those go for?

Thanks, summitracing has it for $131.00

[Krytin]

Its wrong info on their website! It will work on a Mach1 and Marauder.

Very good!
Let us know how you make out w/idle speed - if you decide to raise it or not.
Thanks again for the info!

[babbage]

Very good!
Let us know how you make out w/idle speed - if you decide to raise it or not.
Thanks again for the info!

Glad you found it useful, will do.

[burt ragio]

Tell me if you feel any difference of viberation on longer high speed runs.

[CBT]

Looks good, that's one clean engine! :beer:

[Baaad GN]

NICE! Now ya got to get a blower!

[babbage]

Looks good, that's one clean engine! :beer:

Thanks! WD-40 is what I use..


NICE! Now ya got to get a blower!

Thanks -- already faster than a heat soaked Trilogy! ;)

[Blackened300a]

Thanks -- already faster than a heat soaked Trilogy! ;)

Why does everyone want us NA guys to get blowers?:confused:

[Krytin]

Why does everyone want us NA guys to get blowers?:confused:

Yep - I still don't get it.
If we wanted to go forced induction, we would have done it already!

[na svt]

$133, but I'm curious why it wont work on a Mach1?

http://www.jegs.com/p/March-Performance/March-1996-04-46L-Mustang-SFI-Approved-Underdrive-Crank-Pulley-Balancer-Combo/762845/10002/-1

It works on Mach 1s

[na svt]

Well I had my mechanic install my new March 1158 SFI Fluid filled crank dampener today, with a new hardened $24 ARP crank bolt (90 ft pounds).

With large diameter water pump and power brake pulleys you can use the stock belt.

Hydraboost: March Performance 640-08 - March Performance Belts & Pulleys - Overview - SummitRacing.com (http://www.summitracing.com/parts/MCH-640-08/)
Water pump: March Performance 1172 - March Performance Aluminum Serpentine Water Pump Pulleys - Overview - SummitRacing.com (http://www.summitracing.com/parts/MCH-1172/)

this is an option also:
4” alt pulley: March Performance 116 - March Performance Race Alternator Pulleys - Overview - SummitRacing.com (http://www.summitracing.com/parts/MCH-116/)