Swap in Progress

[7pilot]

Ordered a rebuilt driveshaft today. Serviceable u-joints, balanced, with new CSB.

Next up is the GripsForce/Sachs flywheel and clutch to replace the dual mass unit. The chrome moly flywheel is something like 10lbs lighter than stock unit and the clutch is OE spec.

I'm on the fence about the headers. eBay SS reps for horsepower and lower cost, or shorty's from bimmerworld for torque, jet hot coating and higher cost. I can always wrap the eBay headers, but the collector hangs down pretty low. But then the shorty's will require a serious bend where the Y pipe joins the front primary... I would rather have the torque, but not at the expense of uneven flow between primaries. Any thoughts, ideas, suggestions?

Edit.
Ok, I see you're running ok, and you have a gripforce not an F1 Prolite. The shop must have been familiar with this issue. Good shop.

I have just gotten to this page. I'll read up and edit my post but at this time The F1 chromoly flywheel will not work with the stock Sachs S52 clutch disc and pressure plate. You'll need to cut 3mm to 4mm off the nose of the ZF 320 throw out bearing guide tube. otherwise the guide tube will override roughly 3.5mm of the hub of the clutch disc and will weld itself to the disc. This will lock the engine up. You'll have hell to pay getting the box separated from the engine. This was my experience.
I had read that this was a common combo to use and did not see anyone else encountering this problem.

m

[2002maniac]

don't you need a sprung hub disc with a single mass flywheel anyway?

[markseven]

Edit.
Ok, I see you're running ok, and you have a gripforce not an F1 Prolite. The shop must have been familiar with this issue. Good shop.

I have just gotten to this page. I'll read up and edit my post but at this time The F1 chromoly flywheel will not work with the stock Sachs S52 clutch disc and pressure plate. You'll need to cut 3mm to 4mm off the nose of the ZF 320 throw out bearing guide tube. otherwise the guide tube will override roughly 3.5mm of the hub of the clutch disc and will weld itself to the disc. This will lock the engine up. You'll have hell to pay getting the box separated from the engine. This was my experience.
I had read that this was a common combo to use and did not see anyone else encountering this problem.

m

AFAIK, the GripForce/Sachs setup was plug-and-play for my application and is working well :)

That sucks that you had to take extra steps to get yours working.

don't you need a sprung hub disc with a single mass flywheel anyway?

Sprung-hub discs reduce chatter considerably when working with a lightened flywheel, but offer no other benefit. You can use a non-sprung with a lightened or single-mass unit (I think - I could be wrong).

[7pilot]

don't you need a sprung hub disc with a single mass flywheel anyway?

Sure...Smoother on street driven machines.
Mine is a track dog.

m

[kishg]

sweet.. so when does she hit the track ? waiting for video..

[markseven]

sweet.. so when does she hit the track ? waiting for video..

Thanks Kish. I don't know when my next track event will be... for some reason I don't have any money for track days! :D I will post some vids soon (I hope).

[markseven]

I have almost 500 miles on the new engine; this Saturday she goes back to TNG for an inspection to, among other things, verify that everything is properly torqued, and check if the engine mounts have compressed to a degree that warrants shims. We’ll flush the gearbox and diff fluids and bleed the brakes (I broke one of the plastic elbow connectors for the remote reservoir). I changed the engine oil at 150 miles, and will do so again prior to dynoing. If the car passes the inspection, we will install the skidplate and I’ll schedule an appointment at the dyno shop. Once she has been dyno'd and I’ve addressed some minor cosmetic issues, I’ll get some video and post that as well as the dyno charts.

I don't remember if I posted the exhaust setup:
SS replica headers
2.5" pipes
OE OBD II cat
Walker perforated single-barrel resonator
Dynomax Turbo muffler (I kept the muffler I had - it was perfectly positioned for the BMP kit's exhaust outlet, sounded nice and is in good condition...).

[kishg]

Thanks Kish. I don't know when my next track event will be... for some reason I don't have any money for track days! :D I will post some vids soon (I hope).

no money for track days? ever heard of ramen noodle? :)

[markseven]

no money for track days? ever heard of ramen noodle? :)

Kish, are you single? My wife doesn't mind the track days, but I doubt she'd eat raman Seriously, In the back of my mind I knew it was choice between the swap and DEs. For the DEs, I'm at the point where I would like a cage or at least a 3-point roll bar and a proper harness instead of the schroth 4-point, which means my car would no longer be a DD. It's not the cost of the DEs per se, it's everything else.

[e30polak]

Post an exhaust clip Mark! :hitler:

[kishg]

Kish, are you single? My wife doesn't mind the track days, but I doubt she'd eat raman Seriously, In the back of my mind I knew it was choice between the swap and DEs. For the DEs, I'm at the point where I would like a cage or at least a 3-point roll bar and a proper harness instead of the schroth 4-point, which means my car would no longer be a DD. It's not the cost of the DEs per se, it's everything else.

haha.. nope, not single..

Get a 4 pt rollcage, race seat and harnesses. You can still DD it..

[markseven]

Post an exhaust clip Mark! :hitler:

Soon, mang. We don't have a video cam that we can hook up to the computer. I may use TNG's when I'm there...

haha.. nope, not single..

Get a 4 pt rollcage, race seat and harnesses. You can still DD it..

You are hardcore, amigo ;) I couldn't drive around town in a race seat.

[AlarmedBread]

Great stuff.

Seats only take a few minutes to swap out......;)

[markseven]

Great stuff.

Seats only take a few minutes to swap out......;)

Thanks bro!

... you track guys are killing me!

[MR 325]

Hey Mark, did you still need that fuel rail cover? When is the car coming back?

Matt :)