cost to modify 308qv intake for EFI?

I keep thinking it's a 3-6 hour job, but others have said I’m smoking crack and they were quoted about $1000. You could try Rob at

http://www.force-efi.com/

Tell him I sent you, I bought all my fuel injection stuff from him and have sent a few other people there. He's very knowledgeable and EFI conversions are his only business. I think I would be willing to do it for you for $600 just to see how long it actually does take.

I’m sure Norwood could give you a quote too.

 

zff--
I posted this about 2 weeks ago so you might want to look back at the pics and notes

there are 2 ways of going about this

1- remove your intake manifolds and replace with injectable throttle bodies --the easy way
or
2- do some extensive machining on your intake manifolds to install the new injectors AND make a fuel rail for this

I did mine last year and it was not easy. Here are the steps...

a. machine down the risers on the intake, bore out for injector bungs, epoxy in new bungs--about 8 hours work
b. machine and weld a small extension for your throttle body to extend it beyond the injectors to prevent inteferrence. 6-hrs
c. fabricate and weld a stainless fuel rail and supports (so it won't blow off from pressure.--about 16 hrs work

all together you are looking at 30-40 hours to do this and average machining costs are about 50/hr. If you were local to atlanta I could possible take a look at it but would charge 2000 for it--the fuel rail is a real pain in the butt!!!

 

This may be less relevant to you post, but if I was looking at something like this, I'd consider something like TWM's throttle body injection. I've never looked in detail (although I've heard good things), but the idea of 8 separate venturis [and injectors] in place of a plenum and a single TB sounds like an interesting option. I thought I remember reading the TWM stuff was a couple of thousand dollars, so it won't be cheap, but I'd guess you'd have a hell of a system. Just a thought.

 

There are sets of cast manifolds to fit Webers 40DCNFs made by Frank Capo of Modena Engineering in Austrailia that fit 3.0 and 3.2 qv heads.
Although I used Webers on my 3.2, the TWM Throttle bodies would fit fine; I believe Ric Rainbolt has a picture of these manifolds with the TWM throttle bodies on a 308 qv on his website.
hope this helps your long term planning......
best
rt

 

How much are those intakes from Modena Engineering?

 

Addendum to below:
The Modena Engineering manifolds on a 3.2 - will accept Webers or the TWM throttle bodies.
best
rt

 

"How much are those intakes from Modena Engineering?"

Well, when you can find them, they are what ever they are. Frank said he had some around in Oz, but I got mine for $1500 NOS from Blackhorse in Ca. You can get them for less I would think if you have time to nose around. With 4 carbs at about $1000,the conversion parts total was like $3K. Looks great, works great.

good luck
rt

 

I did a set of runners that sound muchlike what you are looking for , for Bret Mellilo. In his application, I added TPS, 70mm TB, Idle speed motor in place of idle bypass screw, and an Air Cleaner adaptor that replaced the Bosch K-Jetronic, so that he could use all of the stock intake pieces. check with him on how well it worked, and the priceing.

 

How about these? Should be as easy as a kit (I think).

http://www.drivewireaccessories.com/partssearch2.cfm?searchquery=Holley&vehmake=Ferrari&cat=EFI%20TBI%20Kits&keywordtype=manufacturer&veh=308%20Gts

 

Anyone hear of the Holley kit?

 

Getting my 328 upgraded after christmas by ferrari specialist. And was quoted two prices. First was £3000 for head work and new injection parts to richen fuel delevery which should give an extra 20-30 bhp. Second option is the Weber Alpha set up with worked heads and upgraded compleate injection system at a cost of £11,000 ( i was told originaly told £6,000, but there you go its a bloody ferrari), this set up gives around 80 bhp extra. I dont know what it would cost in the USA in comparison, but every thing in this s**t hole of a country is expensive.

 

Chaa, it's my understanding that simply removing the bosch stuff and converting to EFI is good for about 35 hp...and it shouldn't cost more than about $3000 maybe $4000 is you have all the work done. For $15K you could have a blower or turbo installed and be at about 400 hp....just a thought.


Randall, I tried to find more info on the system you posted, couldn't. It looks like they are simple selling a 2 barrel TBI unit. so you would plug the stock injector ports and some how adapter there throttle body to the intake...then you'd need a trigger for it. It looks like snake oil to me..in theory it can be done, but it does not look like they are not selling a bolt-on kit, you'll need more stuff and it will never work as well as port injection.

 

Mike
I contacted Rob from force-efi a while ago (I got tired of waiting for you to design me a 2V blower manifold LOL). He needed more information, so I sent it to him but he didnt reply. EFI has been on my list for about a year. Depending on his price I think I might go with the modified intake, fuel rail, Haltech EK6, set up.

 

Trinarcia,
It's funny, I called Rob the other day because I wanted bigger fuel injectors and there was a guy from CA on the other line asking him about doing a QV EFI convertion. I gave him a bunch of info. I bought my stuff from him, but he only had general info on the project, I handled the details. I think Rob is a little hestitant about doing a convertion for a car he's never seen. If you call him, I'm sure he has what he needs to quote you now. Or if you want, I can convert your manifold for.

And I I'm just starting to build a 2v blower manifold for another guy in CA if you want in ton that project. He's getting a bigger blower and intercooler than I have on mine and then planning to add NOS. 700-900 is the goal. I could make a more normal one at the same time if you want, say 5-10 psi, 40-60% hp increase.

 

guys, this is not a hard job--just is time consuming. I have a ton of pics of my system and can help you with it.

there is basically one question--do you want to stay with original intakes and plenum or go with throttle bodies.

I may be able to do your intakes for you if want

IF staying with original intakes you need to do the following:

1- machine the boss on the intake runners down low enough for the injector to reach the air flow
2 get 8 "bungs" from MSD to epoxy into the new machined holes.
3- make an extension for your throttle body to exteen out past the injectors because the linkage will hit them.
4- make some spacers to raise your plenum about 3/4' to get verticle clearence for the throttle body.
5 (the hard part) make a fuel rail.
6 machine and fit a toothed timing wheel to the damper
7 install new sensors.

 

pics 1

 

pic2

 

pic3

 

I'm still thinking $600 to convert the intake including a fuel rail, another $150 for a throttle body extender/adapter (to install any thottlebody)

If you are happy with the stock distributors, the haltch E6X will run the fuel and fire the distributors using the stock bosch pick-ups you already have so thee is no need to mount a pick-up and trigger wheel. If you what DIS, you'd need to either go to a trigger wheel or a cam position sensor.

 

I have been getting lots of e-mails about this so I will try to expand some on the machining.

Intakes

the efi injectors are quite a bit shorter than the cis units. the tip of the injector should be just in contact with the air stream so the "bosses" need to be machined down about 1/2" and the hole driller out to proper diameter for a MSD "bung" to be epoxied into place--I would not weld tham since aluminum warps a lot when hot.. use marine grade 2-part epoxy.