Ducman82

So i know you can do Euro cams, cam towers, and heads to bolt on some power. but what about dropping a 4.7 euro 16v motor? is it worth the extra displacement vs investment for block other then heads and cams?

Iwanna928

Not sure what the gains would be, but you would be using a block w/ higher comp and a little displacement so it should be worth something.

Let see what the people that KNOW will say!

Stephen

mark kibort

yes, the bigger displacement will work well, but if you get it all apart, why not do it all?

mk

Lopez

In an OB this is supposedly the easiest way to go, but I think the only problem for you is that the Euro S motor won't exactly just drop in because you don't have CIS in an '81. Someone here who has done the swap will chime in I'm sure...

jpNcos

Supercharger

danglerb

If you are starting from the point of reference of a 4.5L 95mm bore block, then I suspect the Euro parts will have some issues or a minimum of a more than the displacement would suggest reduction in power since they are a bit limited IMHO in a Euro S 97mm bore. (valve to cylinder wall is too close).

I suspect the most gain for the buck will be from the largest practical bore size, Euro S heads (which come in CIS and LH flavors), hotter than S cams, and maximizing both the intake and exhaust systems.

robot808

Well, there is truth here. The big problem of course is money. If you are spending the money on all this stuff, you have to draw the line at somewhere and start thinking about getting a 32V car.
If you spend thousands of dollars trying to make this as fast as a 32V car, why not sell this one, take the money and the mod money and get something that starts out faster?
I am a 16V guy. I want my car to go faster too, but there is a point where you have to satisfied or get the S4.
That said, any mods that can get me more HP and are somewhat affordable, I am all over!

123quattro

First I would do MSDS headers and a full exhaust. If that wasn't enough then I would buy Brendan's engine for $1000 and drop that in.

UncleMaz

FWIW, I emailed diyautotune http://www.diyautotune.com/ a few days ago. They build and sell engine management systems, They already have a Bosch 35 pin DIY/PNP MegaSquirt for 944 variants. Our Bosch L-Jetronic box is 4th in line. The sales tech assured me a MS DIY Plug and Play standalone box for our 35 pin Bosch ECU will be available before the end of the year.

Ducman82

so the Euro S motors wont work with the electronic injection? right now im in the process of upgrading my fuel system to the newer style injectors. that should help a little. I do have msds headers and a full flow 3 inch exhaust. my over all goal its to just the power i can out of this with out going stupid. iv done that one to may times with other cars i have had.

danglerb

Euro S 80-83 is CIS, which is a different style and fitting of injector. Euro S 84-86 is LHjet with fittings in the intake tubes for common Bosch electronic injectors, and in stock form a barbed hose fitting like the Ljet motors use, so it "should" work on a Ljet car, but may need some tuning of pressures etc. to get a good air fuel ratio out of the stock Ljet brains.

Euro S 84-86 intake should fit on any 16v long block. Think of it as the Ljet car to Euro S adapter.

It might be best to assume MegaSquirt means plug and play in the Windows sense, as in Plug and Pray, everything fits but it might take a long time for "issues" to be fully sorted out. Switching to LH brains and sharktuning may be the best path for some time.

hacker-pschorr

I like the 250+ pound weight saving and not having an interference motor.....

My 81 is making more HP than some boosted 32V 928's, much less a stock one.


That's excellent news. I hope it's designed around adding a true crank sensor and upgrading the ignition too.

944's already have a true cranks sensor like the EZK/EZF 928's.

Fabio421

There is an L-Jet to Megasquirt conversion in FL. If you want one wired up for your L-Jet let me know. I can put you in contact with the guy who did the wiring.

robot808

Hacker,
Please understand I am asking an earnest question here...
If you don't mind me asking, what do you think you spent getting your car where it is today?
Also, (again, not arguing, asking) is that the Murphy prototype car?

hacker-pschorr

Not only have I not added up the receipts, I didn't keep them either

I started with a used Murf Stage 1 and added my own IC if that helps point you in a general direction.

Yes, #34 on the customers page:
http://www.murf928.com/customercars.htm

IMO in order to get the most out of a boosted 16V the exhaust has to be upgraded. I would start with 85/86 manifolds (or headers) and go from there.
Next everything should be updated (which is a good idea without the supercharger). All new rubber including fuel lines, have the injectors cleaned, new plugs, wires etc....
I would also install a new fuel filter and an 044 fuel pump.

There is something to be said about modifying the car you already have.

I'll never understand the constant comparison between how much you should spend on modifications versus what the car is worth.