I want to play with my ProJection parts:

- Use the TBunit, 670cfm 2bbl, without pod/injectors as air control
- Have Rich at Cruzinperformance make me a MPFI conversion for E-Tec 200 heads.
- use the 2D injectors controller and closed-loop kit and a regular HEI to run the system???
- Later to be converted over to GM 1227747 ECU control and Rochester TB unit air control, when I can get a decent unit.


I ask this now as I am in the mood to get a manifold for a new E-Tec 200 combo. I should jsut go MPFI and get it over with, eh?

 

any help, thought, ideas??? Also, loks like Weiand stopped producing the Vortec MPFI conversion manifold???

 

FB, how about this mpfi manifold from holley? Do the e-tec heads have a vortec manifold bolt pattern or standard pattern? http://www.holley.com/HiOctn/ProdLin.../9901-110.html
Looks like you could use a late model single butterfly throttlebody off an LT1 or LS1 or Vortec mpfi system.

Steve

 

Steve, Vortec/FastBurn intake pattern.

There is another Weiand PN that has a regular 4bbl TB mount on it for the Vortec heads but I cannot find/remember the P/N, I remmeber it has two "dashes" in it, though. My fatty Holley catalog is at home somewhere... Holding my battery up from touching the cement, I think.

I really want to use a 454 Rochester GM TB unit for air control and ease of use/parts. Single TB would be cool, but I already have such a nice Edelbrock Elite Air Cleaner that will match the Elite covers and ETec-200 heads I am buying. Pretty.

I guess I still don't know if I can use the ProJection controller and/or the 7747 ECU to do this. Not explicitly so, that is. After I get my heads, I think I'll call Rich at Cruzinperformance and see if he can help me set up a MPFI system. I should clean/flow-test the injectors while I am at it, anyway, which he can do.

 

Woops. Looks like it is 9901-106, but the PIX is wrong on Weiand site.



Not available on Summit and Jeg's, either, all of a sudden??? WTF

 

If you are going MPFI, I would have thought the SD 7730 would have been a better ECM to use.

 

I plan to use a 7747 eventually with 2" OEM TB for air control, but I like to screw around with stuff. I have the ProJEction in the box for sale, if noone bites, I'll play with it, that's all. I'm with ya, though. The ProJection controller is limited but I have some nice HEI's/curves, which the ProJection can run, which is nice. Just trying to use the parts I got around the shop. If the PRoJection control works, I'll use the 7747 to control the Jeep's 400hp MPFI and the ProJEction with closed-loop will be a nice 350hp MPFI conversion for the '92 350 Blazer/beater/tower I bought.





CAN the Projection TBI ECU unit drive the injectors??? Probably???? Will I fry it of I hook it up to try???

 

It looks like the ProJection drivers are capable of handling 8 high-impedance injectors of appropriate pph sizing for the configuration I need,. ie, error on slightly too large an injector (28's for me), thus requiring slighlty smaller than usual pulse widths, helping the ECU to handle the load/heat more effectively.

Any expert commentary welcome at this time, please.

Grumpy, comment(s), please? I know this is a stupid excersise, but can I do it??? Will it operate properly??? The thought of dial-in-while-friving changes with a closed-loop kit entice me.

 

Grumpy, please help me??? I just want to know if:

1) the engine will actually run
2) the injectors won't be hurt (8 x 16ohms each)
3) the ProJection ECU won't be hurt
4) Max attainable rpm, ie, how fast can the 2 x Peak/hold drivers actually drive the 8 x asturated 16ohm injectors?????
5) I know this is stupid but I'd like to try it as a stepping stone to the 7747 ECU control, will/can the 7747 ECU crontrol these injectors, as is done in the Edelbrock MPFI system, or are those injectors "special" so that they CAN work with a 2 x peak/hold driver system????

 

Any help?

 

Will a Projection run some saturated drivers?.
Yes.
I'm still confused by where your headed. If you wan to use a 747 then just do it, the Projection just adds a lot mor problems to the knowledge cycle. Saturated and P+H injectors have two very different suggested operating times and can lead to problems. I'd figure out what my ultimate goal is and then go for that with as few side trips as possible

 

I hear ya. I only want to use the ProJection as a test as it has easy dial-in as you run convenience. I use this system a lot to start new engines and to break them in. It's really nice to spin the MAIN **** and "fix" the mixture in an unknown combo, that's all. I'll probably do a simple dyno run with it, too, (remember the 2"-to-squarebore adapter I was going to let you borrow) and use the Holley TB as air control for the MPFI as well with the 7747 ECU. ie, it'll be around...

The ProJection ECU normally runs two TBI-type low-impedance injectors, just like the 7747 ECU does, so I figure they have similar drivers. Also, if the Edelbrock MPFI conversion uses said 7747 drivers to control 8 MPFI injectors (high-imp) RELIABLY, it stands to reason that the ProJection ECU drivers can do the same thing reliably, correct???



I believe your statemen(s) as to different electrical requirements, but will 7747 and/or ProJection driver control work, or is one or both of the configurations a waste of my time in that they do not work? ie, I can make BOTh work if I want, correct? the exta steps/time don't bother me and I actually look forward to all this stuff.