the boring but meticulous 2.7i

[JeLani]

Mine's birthday is in the same month as me 3/86 3/97

Happy 30th birthday!

Sent from my iPhone using Tapatalk

[JeLani]

Did you design this?

Hah, yeah! 3.73 makes it a totally different car. To be honest, I'm not completely convinced it's really a 3.73. I'll have to measure with a digital tach -- either mine reads waaaaay high or I was sold a shorter diff than advertised. It was missing the tag when I bought it so who knows. Either way it's a real LSD and it's quiet, so I'm satisfied. It had enough lockup to let me torque down the axle bolts by just putting the car in gear. I replaced the FPR with brand new Bosch last May, so it's good. Aside from a slightly erratic idle and burning some oil, drivability is top notch.



Also, a sign of things to come ... :D

Sent from my iPhone using Tapatalk

[modernist]

Did you design this?

Kinda. I was inspired by other members but I had to make my own design

[JeLani]

Did you design this?







Sent from my iPhone using Tapatalk

Thats so cool man. I asked because im into 3d modeling and stuff and that caught my attention


Sent from my iPhone using Tapatalk

[modernist]

Thats so cool man. I asked because im into 3d modeling and stuff and that caught my attention

Nice! I've just been using sketchup to mess around with designs. Next step is to get some cheap plastic prototypes so I can test fitment, and if that's all good I'll try to get it made out of something better. Maybe Aluminum, but Acetal also seems like a good material. I'm making it so the whole kit can be cut out of one 6"x12" sheet of material to keep costs down; seems like 2d designs are a whole lot cheaper to produce. Still not sure whether to have the whole rotor made of steel, or something else with a ferrous insert for the trigger contact.

Bonus interior shot ... my pacific blue vinyl interior. Not the most desirable but it's in decent shape :)

[JeLani]

Nice interior! And ya 3d involves more geometric complexity.


Sent from my iPhone using Tapatalk

[modernist]

Thanks!

Crappy 1st-3rd gear pull with the new S3.73 (but I suspect it's a 4.10)

[2mAn]

what rpm are you in 5th @ 80mph?

[modernist]

what rpm are you in 5th @ 80mph?

Around 4000, but I also know the tach reads a little high. Have a digital tach, haven't hooked it up yet

[Das Delfin]

my 4.10 reads just under 4k at 80 mph..

Nice 2.7 build. And nice engine compartment. Nice everything. Why do people hate on flat top pistons? From everything I read on 2.7 conversions, everyone said you have to use seta pistons because they match i pistons. Why would it matter?

[modernist]

Aw thanks :)

Why do people hate on flat top pistons? From everything I read on 2.7 conversions, everyone said you have to use seta pistons because they match i pistons. Why would it matter?

Something to do with quench area ... the seta pistons are better matched to the 885 head; people generally do get a bit more horsepower out of seta builds. Digger would probably have something useful to say, I'm not an expert by any stretch of the imagination. No one would call a flat top low comp 2.7 totally optimal, but the people who call them gutless dogs either really messed something up or are relying on forum hearsay. A well-sorted flat top build is still good fun -- midrange torque is buttery and instantaneous.

[modernist]

Well, I'm away from my e30 for January (home for Christmas) but I've been hard at work designing my camshaft position sensor mount. Made the first physical prototype today; messily cut out of foam core but the main objective was to make sure bolt holes line up, which they did, perfectly.

If this ends up working well and there is interest, I may be compelled to sell some. It's an uncomplicated design so it shouldn't be expensive.

[JeLani]

Nice!


Sent from my iPhone using Tapatalk

[Das Delfin]

Sub'd. I'm itching to rebuild my motor and want to do a 2.7 bottom end at the same time. I would be in for a run of cam sensor plates

[JeLani]

How's things?


Sent from my payphone using Tapatalk