I sawed that head apart. After I thought about it, Port EFI didn't seem to offer too many advantages on a log head.
But a cheap TBI would be great
But a cheap TBI would be great
A
Anonymous
Guest
This could be a great project! I'm constantly amazed by the number of Fox sixes on the forum.
There was a guy at the Seattle Roadster Show last year with a six cylinder clone of a GT-350. A good ride with just a few things to nit pick about. I've thought about creating a "phantom" from my '80. For those of you who don't know, a phantom is car built to look factory, but was never built. Like a 3.3i or a 3.3 SVO.
I just dropped my OZ head at the machinist today. Tomorrow I plan to begin work on an adapter plate to fit a GM TBI setup to the OZ aluminum intake manifold.
Gotta get it on the road!
There was a guy at the Seattle Roadster Show last year with a six cylinder clone of a GT-350. A good ride with just a few things to nit pick about. I've thought about creating a "phantom" from my '80. For those of you who don't know, a phantom is car built to look factory, but was never built. Like a 3.3i or a 3.3 SVO.
I just dropped my OZ head at the machinist today. Tomorrow I plan to begin work on an adapter plate to fit a GM TBI setup to the OZ aluminum intake manifold.
Gotta get it on the road!
G
Guest
Guest
Which GM TBI are you using?
Al
Al
A
Anonymous
Guest
I talked to Howell Engineering in Michigan on Monday. They're the ones doing the 300 EFI conversion kit for Clifford. They said that they could do a conversion kit for the 200-cid with a GM 2bbl throttle body, sensors and ECU. Cost would be around $1,200. Time to install would be about 10-14 hours. They said they would probably have to burn severl chips to get the tune up right.
I dearly love EFI and would love to go this route, but TBI would work just the sane as a carb set-up if I went the turbo route. I'd have to build an enclosure for the throttle body. There's also the issue of fuel puddling and even distribution between all the cylinders. The turbo set-up would work, but getting enough fuel to match the extra air flow in the right proportion to each cylinder seems like it would be marginal . . . unless some of you have a better idea. <sigh!>
RS
Oh, by the way, Thanks for the compliment of offering to sponsor, but I think it would be good business just to keep things the way already are. This car (or I, for that matter) doesn't deserve anything extra that anybody else on this forum. I will approach some manufacturers once the first installment gets published, but only where I think it will make good business sense for both parties. I am not one to go and beg for parts promising the moon. I'd rather understate and overdeliver. Nor will I put my retirement into this car, either. We'll see how it goes.
I dearly love EFI and would love to go this route, but TBI would work just the sane as a carb set-up if I went the turbo route. I'd have to build an enclosure for the throttle body. There's also the issue of fuel puddling and even distribution between all the cylinders. The turbo set-up would work, but getting enough fuel to match the extra air flow in the right proportion to each cylinder seems like it would be marginal . . . unless some of you have a better idea. <sigh!>
RS
Oh, by the way, Thanks for the compliment of offering to sponsor, but I think it would be good business just to keep things the way already are. This car (or I, for that matter) doesn't deserve anything extra that anybody else on this forum. I will approach some manufacturers once the first installment gets published, but only where I think it will make good business sense for both parties. I am not one to go and beg for parts promising the moon. I'd rather understate and overdeliver. Nor will I put my retirement into this car, either. We'll see how it goes.
8)
About a year ago I had the opportunity to talk to the Ford inline six Guru, Ak Miller.
First off, a carb setup isnt as bad as everyone thinks. The TBI isnt as good as EFI but it is better than a carb. One advantage is with higher fuel pressure of a TBI system you do get better atomization and therefore better mixing. And the TBI system IIRC uses throttle position sensors so it should have no problem working with a turbo.
1) Due to Federal emmisions laws all carbs made after IIRC 1978 are internally vented. Which means that with the aircleaner on they are not supposed to leak hydrocarbons into the atmosphere. You would probably have to use a new carb to insure the plastic bushings arent worn out and leak.
2)You have to use a a solid float. Holley sells a solid nithrophyl float that has been used very well for this application.
3) You need to use a 2bbl carb since the secondaries are where you get your enrichment. Ak Miller used a couple of jets higher on the secondaries and about 1 jet higher on the primary. He used a carb adapter to mount the Holley 2300 style carb to the intake.
4)With a blow through carb you have to use a boost referenced fuel pump so that when boost comes up the fuel pump sees it and raises fuel pressure.
5)Ak Miller used a carb bonnet that has a hose running to the outlet on the compressor section of the turbo. On this setup the carb does not sit inside a box, the carb is sealed and since it vents internally it has equalized pressure.
The carb bonnet is available from www.turbocity.com
Also since it is a blow through system it can be intercooled.
6) Ak recommended a very high flowing exhaust system 2 1/2" would be the minimum and a 3" would work fine. With a turbo you dont need as much back pressure.
7)The carb was simply mounted to the stock exhaust manifold with a J pipe. Turbo City will bend pipes for custom applications if you need someone to do so.
8)Other setup was a draw through with the carb mounted on a box that was mounted on the inlet of the turbo. Turbo was mounted the same way.
With the draw through a stock carb was mounted since draw through carbs dont need modified. And a stock fuel pump can be used.
Drawback is you cant use an intercooler. Water injection is often used since it will greatly reduce the inlet temperature. And less boost has to be used of course.
According to Ak his company quit selling kits in the late 80's due to hassles with the EPA.
About a year ago I had the opportunity to talk to the Ford inline six Guru, Ak Miller.
First off, a carb setup isnt as bad as everyone thinks. The TBI isnt as good as EFI but it is better than a carb. One advantage is with higher fuel pressure of a TBI system you do get better atomization and therefore better mixing. And the TBI system IIRC uses throttle position sensors so it should have no problem working with a turbo.
1) Due to Federal emmisions laws all carbs made after IIRC 1978 are internally vented. Which means that with the aircleaner on they are not supposed to leak hydrocarbons into the atmosphere. You would probably have to use a new carb to insure the plastic bushings arent worn out and leak.
2)You have to use a a solid float. Holley sells a solid nithrophyl float that has been used very well for this application.
3) You need to use a 2bbl carb since the secondaries are where you get your enrichment. Ak Miller used a couple of jets higher on the secondaries and about 1 jet higher on the primary. He used a carb adapter to mount the Holley 2300 style carb to the intake.
4)With a blow through carb you have to use a boost referenced fuel pump so that when boost comes up the fuel pump sees it and raises fuel pressure.
5)Ak Miller used a carb bonnet that has a hose running to the outlet on the compressor section of the turbo. On this setup the carb does not sit inside a box, the carb is sealed and since it vents internally it has equalized pressure.
The carb bonnet is available from www.turbocity.com
Also since it is a blow through system it can be intercooled.
6) Ak recommended a very high flowing exhaust system 2 1/2" would be the minimum and a 3" would work fine. With a turbo you dont need as much back pressure.
7)The carb was simply mounted to the stock exhaust manifold with a J pipe. Turbo City will bend pipes for custom applications if you need someone to do so.
8)Other setup was a draw through with the carb mounted on a box that was mounted on the inlet of the turbo. Turbo was mounted the same way.
With the draw through a stock carb was mounted since draw through carbs dont need modified. And a stock fuel pump can be used.
Drawback is you cant use an intercooler. Water injection is often used since it will greatly reduce the inlet temperature. And less boost has to be used of course.
According to Ak his company quit selling kits in the late 80's due to hassles with the EPA.
http://www.fullboost.com.au/racing/drag ... 3_073b.jpg
Tony S (bigredrasa)suggested this was good example of what an injected Ford turbo six can do, with mild working over. A Fox body which can do this trick would shut up the critics.
Adam.
Tony S (bigredrasa)suggested this was good example of what an injected Ford turbo six can do, with mild working over. A Fox body which can do this trick would shut up the critics.
Adam.
A
Anonymous
Guest
Al, I have a couple of GM 4.3 throttle bodies. I'll pick the best one and go from there.
There's a bunch of GM TBI sites out there. Check this one.
http://www.justinternationals.org/inter ... ection.htm
More later,
Graeme
There's a bunch of GM TBI sites out there. Check this one.
http://www.justinternationals.org/inter ... ection.htm
More later,
Graeme
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