Can the Second Gen IRS be narrowed? If so could it go as small as 48"? I'm doing a 12A into a MG midget, and need a beefier rear end, and have access to a free 2nd gen Rear end and need an idea of the feasability of this.

Thanks

Daniel

 

I just wanted to put up this little guy, cuz he's cool

 

As long as you limit suspension travel such that the shortened halfshafts don't cause wierd suspension geometry, you should be fine.

Brandon

 

You could go with custom slip jointed half shafts and you'd be set. The shorter the distance from the fulcrom the more the lenght changes at any point in the arc of travel. You could do it, but it might get spendy. Long travel slip yolks are readily availible for things like industrial equipment pto shafts and such that would easily handle the power. Just rememeber you might have to get them balanced when you're done fabing them up.

edit: Also 48" isn't that much narrower than stock 57" considering 8" of that is wheel offset.

You might not have to do a whole lot to get it to work for you. (relatively speaking of course)

 

i would use a solid rear end ... shortening irs rear ends usally messes up the suspension geometry....a common swap for what your doing is first gen rear end ...they also use those on bugeye sprites

 

this wouldn't happen to be for an EMod autocross car would it

all the EM guys in this division with that setup are running the 1st gen solid rear.

good luck, have fun

 

It's actualy for a GRM $2004 challenge car.

I'm not terribly familiar with how the stock second gen IRS works. It sounds like it's going to just be a pain though. I'm going to pick up a 1st Gen out of a junkyard today. Lets hope it's a GSL, cuz it's complete

Thanks for all the replies

 

I want the injectors! lol

 

Uh, sure! I've got some GSL injectors you can buy!

(Note: only GSL-SEs have injectors - all 12A cars are carb'ed)

Brandon

 

I was thinking you were just being lazy and forgot the se part. actually, i was unaware that there was a gsl only model. (not into cigar tubes... um i mean first gens) and yes all 12a's are carbed. I'm aware of that.

 

The $2004 challange. I think a second gen would fair better in that. You could find a 2nd gen for under 1 grand ($1000) and just an air filter ($40) a RB header ($200) and a home made cat back with dynomax muffler (80). That's still gives you pleanty to fix whatever is broke.

 

i'd go with a running 1st gen over a second gen. port the hell out of the engine for near free - free if you have all the parts and pieces you need. and if you need parts, i have spare rear 2nd gen axles, rear strut/spring, driveshaft, and rearend, but you'll have one already and i kinda want to keep mine. but the other parts are for sale - cheap because you're in the $2004 challenge.