http://forums.pelicanparts.com/uploa...1537911882.jpg
http://forums.pelicanparts.com/uploa...1537911882.jpg
Been 1 year off the road , hopefully will be started next week.

Really nice!

Dear Friends / ITB gurus

I'm installing a Jenvey ITB with a fueltech FT500 on a 3.6 engine, and a have a few questions regarding this installation

1-) Where could I install the Air Temperature Sensor, since I'm not using an air box and my filter is too small ( tea strainer type) to install this sensor?

2-) I made some 6mm threads to install a vacuum port on each cylinder, where each vacuum port will connect to a vacuum manifold, so my questions are:
2.1-) My manifold have 6 6mm inlets and 2 12mm outlets, is one 12mm outlet enough to drive the brake boost?
2.2-) Is the one way valve on the brake boost enough or do I have to install a second one way valve and perhaps a vacuum accumulator of some sort?
2.3-) on this other 12mm outlet, can I attach a idle speed valve? or it will disturb the vacuum and consequently ( the MAP, the brake boost, etc) when it open to allow air to pass by to hold the idle?
2.4-) The car will not have an A/C system, so is the idle valve control necessaries?

3-) Regarding the fuel regulator, my initial idea is to install the original FR that came with this 3,6 engine
Will that work? This Porsche FR is a little bit different, it have 2 inlets (one for each bank of cylinders and one outlet to the fuel tank)
If this fuel regulator does not work what are the other options? I saw a lot of fuel regulators that have a manometer on it, my preference is not to install something like that since i'm trying to go with a clean look and not a race look for this engine bay

Thank you all
http://forums.pelicanparts.com/uploa...1538258059.jpg
http://forums.pelicanparts.com/uploa...1538258059.jpg
http://forums.pelicanparts.com/uploa...1538258059.jpg

Ricardo,
There will be other suggestions, but this is how I setup my ITBs on my 3.6 and it all works fine except IACV, which I have found that I don't need anyway!

1. Inlet air temp sensor is mounted on a bracket that also supports the fuel regulator and is situated above the engine near the throttle bell crank. There is so much air passing through the engine bay that it really doesn't matter where you put it as long as air passes over it.

2.1. My brake booster takes its vacuum from six 6mm ports and works fine.

2.2. I am using the original one way valve with no additional vacuum tank except for the small box that acts as a manifold. It works fine.

2.3. My ITBs each have two 3mm vacuum ports, so I used one set of six for idle control and the other set for vacuum to my ECU (MS3X) and fuel pressure regulator.
I never managed to get the IACV working properly with MS3X, so it is disabled and not used. For reference, when I disconnect the hoses from the IACV, revs rise to about 1500.

2.4. Do you need a working IACV? I don't. I don't have a/c and I don't live in a cold place. Engine always starts OK, but idles a bit low for the first minute or so (4-500rpm).

3. I am using an aftermarket FPR with a pressure gauge (useful), but only because the original one wasn't working. It still has a connection for each fuel rail.

I hope this helps. :)

http://forums.pelicanparts.com/uploa...1538303239.jpg

http://forums.pelicanparts.com/uploa...1538302565.jpg
Numbers = hose size.

http://forums.pelicanparts.com/uploa...1538302741.jpg

Nice - and hopefully you'll have it ready for the NZ summer. Who is the manufacturer this set-up?
Cheers,

Dear Billjam,

Thanks for the info, It helped a lot, one more thing, what is your solution with the oil tank hoses?
I know that the big one on the body of the tank goes to the breather on the crankcase
The one on the neck is a vent, that usually goes to the airbox, but now that i don't have an airbox, what to do?

Thank you all

Oil Catch cans link:
http://forums.pelicanparts.com/porsche-911-technical-forum/528415-can-i-see-oil-vent-catch-cans.html

Regarding your FPR. Most ECU's in conjunction with ITB's require a set PSI. I have Jenvey's controlled by an AEM Infinity. If memory serves me the aftermarket FPR is set at 41psi. Contact your Manufacturer to be sure. Or it might be in the install literature.

My Current setup is on page 11 of this thread: http://forums.pelicanparts.com/porsche-911-technical-forum/925845-post-your-itb-setup-11.html

Prior to my current custom setup I ran a set of Triumph ITB's with tea strainers and the IAT sensor closer to the engine surface.
If your car is street car. Look into some foam socks to slip over the stacks. The Jenvey's are little jewels and you'll most likely want to keep a lot of particulate matter out of there. Also with my current setup I began to monitor Ambient air temps by temporarily relocating my IAT sensor. The old position was subject to heat soak. While my current position is dead center of my manifold TEE. Very satisfied with this arrangement. You might consider mounting yours in one of the rear stacks so it will not be seen. Some have mounted it in there intake manifolds below the ITB.

One last suggestion is that you may want to start a new thread on your set up. It would be more apt to have replies from the great wealth of builders on our forum.

Best of luck with your build!

yes what set up is this

IAT sensor
 

Looks nice Ricardo. I finished my Jenvey install last fall, so this is all very familiar. Like someone suggested, I mounted the IAT sensor out of sight on the back side of the velocity stack. I epoxied a piece of metal to the stack and then drill/tap. http://forums.pelicanparts.com/uploa...1538361441.jpg
http://forums.pelicanparts.com/uploa...1538361471.jpg
http://forums.pelicanparts.com/uploa...1538361498.jpg

The FPR is aftermarket and mounted directly to the fuel rail outlet, with a gauge. Hope this helps.
http://forums.pelicanparts.com/uploa...1538361929.jpghttp://forums.pelicanparts.com/uploa...1538362458.jpg

Dear Acme 911 and Rob Weiss, thanks for the feedback!
I'll follow the suggestions and move forward with my assembly, I'll post pictures later on
By the way Rob, what was your solution on the oil tank vent and where did you bought the FRP?
Regards to you all
Ricardo

Ricardo, Here is a link to FPR’s: https://www.summitracing.com/search/part-type/fuel-pressure-regulators?SortBy=Default&SortOrder=Ascending&tw=F uel%20press&sw=Fuel%20Pressure%20Regulators

http://forums.pelicanparts.com/uploa...1538447069.jpg
http://forums.pelicanparts.com/uploa...1538447069.jpg

David, Thanks for sharing those details! I;ve got one of theses I'll be putting together as well using the Rasant system along w/10.5:1 CR, TWM ITBs, twin plug, etc.. pretty much have all the parts except the cams.. hence my question.

We've used the GT2 Evo cam on a couple of occasions, but they were in Turbo applications, and don't remember the lobe center though I don't think it was 108.. typically ot moved the power band upwards for more top end.

What are you looking for with your set-up?


Thx

Fpr
 

Ricardo,
The oil tank vent is routed to a breather. I plan to install a catch can eventually, but it’s working fine the way it is.
The regulator can be sourced from several suppliers. Here’s a link to the one I used. They sell an adapter fitting to mount it directly to the fuel rail. Also, I had to use a 90 degree fitting to orient the gauge where I could read it.
https://www.aeromotiveinc.com/product/efi-bypass-regulator/

IS300 , Motley911 it's a Jenvey large bore 2 bolt kit , I got everything anodized and coated in black.http://forums.pelicanparts.com/uploa...1539413396.jpg
Just received an order from hilborn injection, synchrometer and some black dust covers , will probably sell Bills covers.
Injection loom and cop loom almost completed should definitely start for the NZ summer :)

I thought I would add some pics of my ITB installation.
Basically it is Triumph 955i throttle bodies on manifolds from DanST Engineering with trumpets from the same. Home made air filters. Home made linkages based on the closed course Motorsport idea. Megasquirt2 ECU.
You can find the full threads at ImpactBumpers.com

http://forums.pelicanparts.com/uploa...1551499912.jpg
http://forums.pelicanparts.com/uploa...1551499912.jpg
http://forums.pelicanparts.com/uploa...1551499912.jpg

Looks great!

GSXR1000 throttles, BMW E46 M3 throttle motor, custom fuel rails, custom trumpets, EFI and electronic throttle actuator controlled by VEMS (used BMW E46 throttle pedal).



http://forums.pelicanparts.com/uploa...1551506783.jpg

http://forums.pelicanparts.com/uploa...1549022543.jpg
http://forums.pelicanparts.com/uploa...1549022543.jpg
http://forums.pelicanparts.com/uploa...1549022543.jpg

I like the throttle by wire setup twist on the ITB setup! Makes traction control easier.

Raceboy- nice setup! I’ve been looking into the e46 motor controller for another project. Mind sharing any info on the wiring? AEM Infinity can also control these.

I went electronic throttle route due to not liking the idea of long throttle cable. Since my car was heavily modified by PO it did not have it at all and I thought it would be easier to use ETC than figure out cable setup and routing. With LSD and ~200rwhp from my 2.4s I don't think traction is problem with 911 :D
Wiring is easy, actuator has regular BMW TPS mounted (like M50 engine has) and then just 2pin JPT connector for motor. It is controlled by H-bridge which my VEMS ECU has built in. From throttle pedal there are two PPS (pedal position) sensors, on is for main load, other is for error correction and finally TPS on the GSXR throttles. So total of four position sensors and also safety relay for throttle motor (for instances where pedal target differs too much from actual throttle angle. In case of error it just reverts to default position (meaning idle).

wow! i have a favorite install now. any vacuum lines or ports to the bodies?

http://forums.pelicanparts.com/uploa...1555616579.jpg

Here is a initial picture of our set up done by our technicians here at Weissach Brasil, it's a kit done by Closed Course Motorsport with working IACV controled by the ECU, we have wide band correction and A/C compenstation.

The engine is a 1973 ex-K-Jetronic 2.4L.

We'll soon have a video of our dyno run.

We've tried to leave our engine bay as clean as possible

There are more pics at our Instagram: weissachporsche

New setup because i cannot leave anything alone. Jenvey ITBs and 996 GT3 manifolds.

https://uploads.tapatalk-cdn.com/201...8fec51684b.jpg

X-faktory Triumph ITBs with Clay's K&N rainhat adapter kit

https://live.staticflickr.com/65535/...3e7de30e_z.jpgIMG_2215 by Michael Small, on Flickr

https://live.staticflickr.com/65535/...66667af7_z.jpgIMG_2216 by Michael Small, on Flickr

Clay.0, more info please? I am thinking about turboing my SC that is currently running PMO's I want to find a good slick intake set up. Thought a stock 3.2 intake would work, but this is just way cool.

did you see any benefits with this?

So what has been everyone's experience wiring in EFI? Have you wired the engine before or after installation into the car? I'm after a tidy install with the least amount of wiring visible, so I intend to install the ECU and relays inside the car.

Thanks in advance!

Shot you a message in your thread, but I'll add it here for posterity. My setup is a US 3.0 SC with 964 cams, Triumph ITBs from Clay, Toyota COPs, Bosch 31lb injectors being run from Microsquirt EFI in wasted spark.

Velocity stacks are from a Yamaha XS650, they have internal mesh screens and stay in place via 3 set screws each. I also have Filterwears velocity stack pre-filters to help keep out water. Additionally, I'm not running a catch can but trying out an air breather filter with its own Filterwears pre-filter, we'll see how it goes.

https://i.imgur.com/ky3uWa0.jpg

It looks nice.

power and throttle response is about the same as the Triumph setup

Shamrok - Very clean install! looks great. Nice touch with the velocity stacks.

Good afternoon everyone,

Are 46 PMO ITB's to large for a 3.0L?

Thanks

David

What year is the 3.0L?

1983 3.0L so I assume small ports

ITB Set-ups
 

I know you said ITB's, but just in case someone out there wants a view of a different group of options, I am posting a description of a Single TB Installation on my 1974 Porsche 911.

The basic EFI Kit came from Bitz Racing and consisted of the ECU, wiring harness, fuel Injectors (Ford 30#), Fuel Bars and misc bits.
I also obtained the following Used parts from eBay and Rennlist: a Porsche Single Throttle Body & a Set of (6) Porsche Intake Runners.
My old Fuel pump only produced about 6 psi and the EFI needs around 36 psi, so I bought a Fuel Pump from Summit Racing and some small supplies like fuel hose and filters, and an air intake system were purchased locally.

I did the Programming over a period of about 2 years working part time. In fairness, the default settings provided by BitzRacing worked great right out of the box. But each setting needed to be tweaked for my specific Porsche and environment. I was surprised when after hooking up all the parts, fuel lines and wiring, I reached through the driver's window to turn the key. I was expecting it to crank over and over and perhaps build oil pressure. Well, it did that and more! It rolled over 2-3 revs and fired up, then it idled smoothly at approx 950 rpm. I was all smiles!

I have been running this system for roughly 10 years and have not had a minute of trouble until a couple of months ago. To his credit Tony Bitz provided email support answering my endless questions with patience and knowledge! I ending up finding a fuse blown but had Tony go through the ECU just to be sure there were no problems in that expensive part. Thankfully he found no problems and returned it to me all for a small (IMO) fee of $50., which I thought was completely fair. I still have not found a reason for the 3a fuse to blow but I replaced it and the problem has not repeated itself.

http://forums.pelicanparts.com/uploa...1581282887.JPG
http://forums.pelicanparts.com/uploa...1581282887.JPG
http://forums.pelicanparts.com/uploa...1581282887.JPG
The bottom photo shows the "Before" look with a pair of Weber 40IDA's. The top photo shows the Finished almost EFI Project on my 2.7L engine awaiting the Air Filter System, etc. #3 shows another view of the completed system. Enjoy!

This looks spectacular. Clean! What fuel filter are you using?

I want to know what he is going to use as an air filter because what I see isn't much better than no air filter.

Plus, I see no flapper valve or flapper control so I don't get what the point is......

Here’s my 3.0 EFI ITB setup



PS if anyone can tell me why my pics always come out upside down when I post, i’d appreciate it.

PPS fixed the pic - thanks for the tip http://forums.pelicanparts.com/uploa...1586355035.jpg

System was installed by Al Kosmal - thanks Al!

Try a minor color correction and rotation before posting. Works for me every time on my Mac.

http://forums.pelicanparts.com/uploa...1586343745.jpg

Sump vent and evap line hook up?.
 

What kinds of options are there for dealing with the big vent line from the sump tank and the small evap line from the l fender charcoal canister.
Additionally, my 74 has that huge black canister tucked into the front of the engine compartment.
I learned my lesson on the 308, dumping all of the smog/evap junk, only to run out of fuel because the fuel tank didn’t get any make up air as the fuel was consumed -DUHHH.
I am inclined to run the sump vent line into the bottom of the right K&N filter and do the same with the evap line on the left side. I see a fair bit of oil residue in the CIS air box and don’t want to have that running out of the air cleaner, but a puke can is unappealing also. Should I go totally retro with the antique “Road Draft Tube”, that left a huge oily black smear down the center of each road lane? Maybe not.

On a more positive note, Shaun’s air cleaner is absolutely gorgeous and I see that he has a small K&N vent filter on the sump.

Looking forward to the X Factory early Christmas present.
chris

Jason,
Thanks for posting. Installing that early air filter housing was the right way to go....looks great and was relatively easy to do.

Chris.....your EFI kit is coming together and will be heading your way shortly.....

regards,
al

PS: I have been installing that small breather filter on the sump on quite a few installs and it has been working well.
PSS: Chris, the PMO kit does come with the bits needed to plumb the vent into the rainhats.