Does anybody know where I can get a CAD model the of L15A engine. I would not want a full parametric model, just a dumb solid in an IGES file. I'd like to design a few things for our little engine.

 

Umm.... if anyone has gone to this level, maybe DSM?

Whatch wanna make?

 

Thinking of designing a few things. Possibly exhaust, turbo manifold, supercharger add on and anything else I can think of. If given the right models i'd look at the CFD of the head and possibly redesign a high compression unit.
Just depends.
-bix

 

Hmm.... well I certainly hope you can find the right file!!!

I know the L15a1 in the GD starts at 10.5 to 1 which is decently high compression. Not sure what the later GE L15a7 is.

If you get as far as a whole replacement head for the a7, I'd think the first thing you'd want is a set of separated exhaust flanges as opposed to the OEM header cast as part of the head. Maybe you could even set it up to use existing GD exhaust pieces...

 

Yes... that was the original plan. Every single head that has had an integrated exhaust manifold has been a dog in the name of saving 2$. I'm sure given half a chance this little 1.5L could be make a 8k rev machine which would probably be great with the Fit's short gearing. Even given enough time and attention, I could probably retrofit the CRZ's 6 speed transmission with little effort.

 

I'm interested as well. I'm a CNC programmer. It's also a hobby. My guess would be any company doing large upgades/modification, mainly anything that has to do with interenals. i sent out a couple emails but I doubt i will even receive a reply due to "competitive reasons".

BQ, if you come up with a project. let me know maybe i can help, or at least make one for myself and be a gineu pig.

 

There is actually no need to attempt a CRZ retro fit, there is a JDM type RS Fit with a 6 speed already....

https://www.fitfreak.net/forums/2nd-...fo-online.html

https://www.fitfreak.net/forums/2nd-...m-rs-vids.html

If I recall correctly it also has a different flash on the ECU allowing for a near 8K redline... cant find the exact video though

 

Umm... then why can't we have both? A 6speed and a 8k redline?

 

Good question. Why didn't we get the Euro Type R or for that matter almost any of the Type R's in the states?

If some one were to import the parts, we could find out more. So far though, I don't know of any one who has.

 

Pics of your foxbody, NOW!

Still SBF? Poweradders?

If you were going to go through the trouble of casting or milling a new head.. might as well go all out with a DOHC. Keep all the factory oil/coolant passages just re-route them, run the factory chain over an idler and to the intake cam with a helical transfer set to drive the exhaust.. then make use of some adjustable gears or even i-VTEC style independent cam phasing and go with a intake and exhaust flange thats more common like a B or K series.. or even L15A1 flanges.

Valve angle changes, de-shrouding, etc. could make a real difference. Valve spring seats with room for cutting to mount bigger, bee-hive style springs, maybe a way to modify a Jesel Rocker shaft to accomodate a serious cam and different ratio rockers.. a guy can dream lol

 

I knew DSM would find and join this party eventually

 

Its a Dart Block 347 with Ported Edlebrock Heads, custom supercharger cam, Ported Edlebrock intake and a vortech supercharger running 14 lbs of boost.
Off boost is made 394rwhp and 421ft/lbs. It is kinda a sleeper, but really it was meant to run American Iron open track. I went a weeee bit overboard on the engine.
bummer.
-bix
As for head, I just want to maximize what is there. I don't think out little engine could gain must from DOHC without going to some REALLY high compression and take it to FAR over 8k RPMS. I don't think the cam and the Vtec are willing to go that far. I just wish they'd put in the cheapie 1.8L and make the thing a little peppier.

 

Very nice! The domestics have soooo many head cam and block options, its disgusting. Im dying to build a 10.5 radial fox mustang for myself. The outlaw guys are in testing now, running 4.40s to the 1/8th this year!

Theres a surprising amount of cam options for the l15 though, at least for the first gens.. I bet a trip to a junkyard to grab a stocker and send it off to a group like comp or bullet and tell them what you intend to do and they could help. Since the new head would dictate a full standalone EMS anyways might as well go radical on the cam/valve train.

Recently had a custom set done for my 2.0 to match the new setup and 71mm turbo.

Last cam set if I remeber was in the neighborhood of a 274/274 114LSA .42x gross lift both cam sprocks retarded a couple degrees asymetrically to change the overlap as well as move the power curve to the right this was then fed by a 59mm turbo. Pulled hard to 9250rpm and moved 670whp worth of air. Acceleration figures backed this up.