The next big thing....3.0 EFI/ITB w/Rasant engine management

[al lkosmal]

Originally Posted by jimtweet

can you tell me what coils you are using exactly

greetings, the coils are part of the Rasant Engine Management kit and are Bosch part number 0 986 221 024.
regards,
al

[al lkosmal]

Originally Posted by Rich Lambert

You are an artist...

Thanks Rich.......for the kind words. I appreciate it.

regards,
al

[al lkosmal]

Originally Posted by Pfitz911

Looks awesome Al!!
My dream engine build ( but with my 2.7!!)

I like the 2.7s too............and 2.2s....3.0s, 3.2s....3.6s......you know what i mean.

https://www.youtube.com/results?search_query=koz77911




regards,
al

[David Borden]

Al, project looks great!!! Are you still using the Triumph Speed Triple throttle bodies?

When are you targeting your first fire?

Originally Posted by emptyo

The angle of those horns is killer. I'm curious what the in-car management of the engine is. Laptop? Ipad? iPhone? I'm sure we're pretty close to these ECUs coming with built-in bluetooth or wifi so we can adjust on the fly, no?

The Rasant kit uses the AEM Infinity ECU. You tune via a Windows laptop and USB connection. I have a good friend tuning his with a Macbook Pro and the Windows emulator it comes with and its working fine. You can log to USB and download afterwards, or log direct to the laptop.

[al lkosmal]

Originally Posted by tirwin

Al,

I love to see this project coming together. This is the project I've always wanted to see someone do. I have a few questions if you don't mind.

Looks like this was an early 3.0 motor so assuming these are the bigger ports? What size are the throttle bodies?

this is an 1982 3.0 with the smaller ports. T'bodies are 44mm

Would you expect any clearance issue with an A/C bracket interfering with the right fuel rail?

Don't know....I live in the Pacific Northwest and none of my 911s have had...or needed air conditioning.......however this engine originally had the AC bracket installed and it's in my stash...I'll check it out and report back.

What are you using for the throttle linkage from the bell crank to the ITBs?

I have designed this system to work with standard weber/PMO (I use PMO) linkage


I'm curious to know more about the thought process behind the length of the velocity stacks, the cam selection, etc. What is your general expectation for HP/torque gain? How 'streetable' is this setup?

I have put a bit of thought into this aspect of the design and have a fairly long answer to these questions and i'm sleepy now....I will get back to you later.......



I have talked to some people who say that the stock CIS pistons are not suitable for EFI. Others say it doesn't matter, but the more I read, the more I think there is truth in the statement that CIS pistons aren't suitable. Obviously you've gone with higher compression pistons. Were these selected specifically for an EFI application?

Stock CIS pistons work fine with EFI......however stock CIS pistons do not work well with hotter cams....so , if you are looking at developing a nice street rod engine (and that is very subjective)....you should approach it as a system, based on your requirements. For example...I like this system configuration

I chose 9.5:1 JEs because they provide higher compression without requiring twin-plugging. These pistons are good for carbs and EFI applications and have pockets deep enough for hotter cams.
I really like early e-cams for their overall characteristics....so i chose a cam very similar to early E, but with higher lift more compatible with the larger 3.0 engine. combined with headers and sport exhaust...this is a great combo for the street/canyon carver.........it is a hot rod engine, but not over the top and over-stressed. should work fine and last a long time.....


But that's just my preference....and I debate this stuff endlessly with my peeps........you might have a different use for your 911 and want higher compression, twin-plug,,,,much hotter cams etc.........lots of choices, but in my mind, you need to decide what you like/want .....and why....then define the system.

[Ferrino]

Beautiful setup.

Are those coils fastened to the valve covers in any way?

[al lkosmal]

Originally Posted by Ferrino

Beautiful setup.

Are those coils fastened to the valve covers in any way?

They are not.....they are, however, a very snug fit onto the plugs and into the plug ports.....there is a little bit of wiggle room, but not much. They are tight and it is not likely that they will come loose, but i will check them while on the engine stand, during testing and report back.

regards,
al

[al lkosmal]

Installed the heater backdate ducts and the headers and adjusted the T'body linkage.........the last of the fuel plumbing fittings are due tomorrow and then i will move this engine to the test stand.......




regards,
al

[Ferrino]

Originally Posted by al lkosmal

They are not.....they are, however, a very snug fit onto the plugs and into the plug ports.....there is a little bit of wiggle room, but not much. They are tight and it is not likely that they will come loose, but i will check them while on the engine stand, during testing and report back.

Thanks for the info. I wonder if those RSR-style spark plug holders would work well for peace of mind?

[al lkosmal]

If required, i think those would work very well.

Thanks.
al

[enzoducoing]

Originally Posted by al lkosmal

If required, i think those would work very well.

Thanks.
al

I would be wary of using those retainers if not absolutely necessary. I've tried them and they do not fit correctly inside the cover's recessions and do not allow you to properly torque the covers. What I ended up doing is changing the cover's studs for longer ones and torquing the covers with a set of security nuts and placing the plug retainers on top with another set of nuts, this gave the retainers sufficient clearance over the cover's recession and allowed me to have them properly set and torqued without the possibility of loosing torque when moving the retainers.

[al lkosmal]

Originally Posted by enzoducoing

I would be wary of using those retainers if not absolutely necessary. I've tried them and they do not fit correctly inside the cover's recessions and do not allow you to properly torque the covers. What I ended up doing is changing the cover's studs for longer ones and torquing the covers with a set of security nuts and placing the plug retainers on top with another set of nuts, this gave the retainers sufficient clearance over the cover's recession and allowed me to have them properly set and torqued without the possibility of loosing torque when moving the retainers.

I do not plan to use them unless necessary, but due to the height of the COPs, a longer stud or threaded space will be required...............

anyway, not an issue at this time..........

regards,
al

[Charles Freeborn]

Excellent job Al, as usual. Could you share, in round numbers, what the parts cost of such a project runs? This is the engine I'd dream of for my '74.
Thanks!
-C

[APachon71RN]

This is just plain sexy!!! I can't wait to hear that motor in a car at full song!!!

~A

[al lkosmal]

Originally Posted by APachon71RN

This is just plain sexy!!! I can't wait to hear that motor in a car at full song!!!

~A

Here you go.....a couple of examples..............

Here's my kit on a very nice 3.2 tarmac Rally 911 (stock 3.2) originally located in Portugal (AlexJ on Pelican) and then sold to the guy who made the pro video.


https://www.youtube.com/watch?v=enRgZ4FUNB4&feature=youtu.be




My S3-EFI/ITB kit installed on the 3.2 SS engine in the DZUG boys tour car in north Carolina.(headed for Sicily)


https://www.youtube.com/watch?v=pxXwaL_TdmY


https://www.youtube.com/watch?v=xaj0FyEmc68

regards,
al

[APachon71RN]

Sounds EPIC!!!

~A

Originally Posted by al lkosmal

Here you go.....a couple of examples..............

Here's my kit on a very nice 3.2 tarmac Rally 911 (stock 3.2) originally located in Portugal (AlexJ on Pelican) and then sold to the guy who made the pro video.


https://www.youtube.com/watch?v=enRgZ4FUNB4&feature=youtu.be




My S3-EFI/ITB kit installed on the 3.2 SS engine in the DZUG boys tour car in north Carolina.(headed for Sicily)


https://www.youtube.com/watch?v=pxXwaL_TdmY


https://www.youtube.com/watch?v=xaj0FyEmc68

regards,
al

[Larrybrook]

I want to stay up to date with this thread. how do I "subscribe"?

[al lkosmal]

Originally Posted by Larrybrook

I want to stay up to date with this thread. how do I "subscribe"?

scroll up to the top of the page and in the upper right hand corner....click on 'Thread Tools"

[al lkosmal]

Originally Posted by Charles Freeborn

Excellent job Al, as usual. Could you share, in round numbers, what the parts cost of such a project runs? This is the engine I'd dream of for my '74.
Thanks!
-C

Charles,
The numbers related to this particular build are specific to the new owner, but I'd be glad to discuss numbers with you, in general...if you will pm me with your email address.

regards,
al

[flyn-hawn]

Originally Posted by al lkosmal

Installed the heater backdate ducts and the headers and adjusted the T'body linkage.........the last of the fuel plumbing fittings are due tomorrow and then i will move this engine to the test stand.......




regards,
al

Al,

Great project, my question is, if you are running headers how are you going to use the backdated heat?

Dave