jeep 4.7 stroker

cymax · Post by **cymax** » Wed Nov 21, 2007 11:40 pm

hello
i am new here and would like some advice

i am building a jeep 4.7 liter stroker
i will be using an msd 6a ignition box and stock jeep ford style distributor

i would lite to know witch of the MS would fit more my application

MS-I v2.2 or v3

i also would like to know if in using the v3 do i need to use the steeper IAC

this a for an off road application and the sensor will all be GM based
MAP, Air Temp and well as Collent Temp and

Matt Cramer · Post by **Matt Cramer** » Fri Nov 23, 2007 6:57 am

Ok, is this a Jeep 4.7 SOHC V8 that's being stroked to something bigger, or one of their pushrod inline sixes that's been stroked to 4.7 liters? There's going to be a big difference between the two. Also, are you going to be using the Megasquirt to control the ignition, or just fuel?

cymax · Post by **cymax** » Fri Nov 23, 2007 11:50 am

this a jeep Inline 6 4 liter with a amc 258 crank and connecting rods

the ignition will be controlled mechanicaly ( ei it uses a distributor) so i guess just fuel

i wonder if i use the v3 of the MS-I will i be foreced to use the IAC or is there some way of bypassing this feature

Matt Cramer · Post by **Matt Cramer** » Fri Nov 23, 2007 12:59 pm

Ok, fuel only and an inline six is pretty straightforward.

If you're using the Jeep IAC, you'll need an MS-II. If you are removing the IAC and propping the throttle open, using an on/off IAC, or maybe getting a Bosch IAC out of a junkyard, you could use an MS-I.

cymax · Post by **cymax** » Fri Nov 23, 2007 2:57 pm

cool thanks for the help

can i use the IAC that u sell for jeeps i believe that my original block comes form i think that i will get MS I v3.0.

will the MSI v3 use the IAC??

or do i need a MSII for that feature

wagon · Post by **wagon** » Sun Nov 25, 2007 2:06 am

You will need MS2 for stepper motor control.