Slant Six Forum
https://slantsix.org/forum/

Just thinking out loud... bolt on slant six EFI idea
https://slantsix.org/forum/viewtopic.php?t=24965		 Page 1 of 3
Author:  Matt Cramer [ Mon Sep 17, 2007 5:11 pm ]
Post subject:  Just thinking out loud... bolt on slant six EFI idea
The thread on the Jeep conversion got me to thinking... how cheap could one get a nearly bolt on slant six EFI package for? This would be avoiding a four barrel type TBI (that would be too easy, and potentially stuck with fuel distribution issues), and use parts that you could just call up a supplier and order. And I'll also avoid both used parts and some of the more notorious suppliers, too.

Start with Extrudabody Weber type throttle bodies, around $1,000.

Bolt it to a Pierce manifold for putting Weber DCOEs on a slant six - not sure of the price there.

I've seen OEM type injectors selling for $35 each, so that's $210 for the injectors.

Add a MSD fuel pressure regulator ($70) and Carter fuel pump from a late '80s Ford pickup ($90).

Computer control - a complete Megasquirt system with relay board, sensors, and wiring components can go for around $700 assembled (in the spirit of bolt on, I'm not including the solder it yourself kits).

You'd probably want a wideband oxygen sensor system, around $300 with a gauge or $200 without one.

And leave another $200 for fuel lines and all the little things not listed.

Looks like you could come in under $3,000 for such a package. Not the cheapest you could get, but it's in the same ballpark as an Accel or Edelbrock package for a V8.
Author:  gmader [ Mon Sep 17, 2007 8:46 pm ]
Post subject: 
I think that you are on the right track in concept, but I would go with a more conventional manifold, and single throttle body. In fact, I would recommend an early 90's mustang V8 TB. They come with idle air control built in, and a well known ( for megasquirt systems) approach to the TPS. ( I know that you know this!)

I would really love an Injection rail set up that is ready to go, with -6 fittings and a pressure regulator.

Greg
Author:  DionR [ Mon Sep 17, 2007 9:30 pm ]
Post subject: 
I think I would go for the weber looking setup (assuming what Matt is talking about looks like what the Drake's are running).

It would look kind of like a BMW six. :twisted:
Author:  Matt Cramer [ Tue Sep 18, 2007 5:46 am ]
Post subject: 
The reason I went with ITBs is that I was trying to draw up this list using entirely off the shelf parts. An EFI specific manifold would probably be easier to tune. Outside of a batch Clifford made up a while ago, there's not much out there that wouldn't need machine work, though.
Author:  GoFish [ Tue Sep 18, 2007 6:32 pm ]
Post subject: 
This is a very interesting thread to me. I'm not a fabricator, but really want to run efi and a turbo on my /6. I'm not adverse to spending on a "package" with proven, compatible components.
Author:  DionR [ Tue Sep 18, 2007 9:30 pm ]
Post subject: 
This has me about as excited as the turbo stroker 170 I would like to build someday.

Hey Matt, what about the setup the Drakes are using? Seems like what you have shown here is different than theirs. Any better?
Author:  slantzilla [ Sat Sep 22, 2007 1:08 pm ]
Post subject: 
Quote:
This has me about as excited as the turbo stroker 170 I would like to build someday.

Hey Matt, what about the setup the Drakes are using? Seems like what you have shown here is different than theirs. Any better?
I guarantee you can't buy a system like Drakes for $3000. :lol: :lol:
Author:  DionR [ Sat Sep 22, 2007 1:43 pm ]
Post subject: 
Quote:
Quote:
This has me about as excited as the turbo stroker 170 I would like to build someday.

Hey Matt, what about the setup the Drakes are using? Seems like what you have shown here is different than theirs. Any better?
I guarantee you can't buy a system like Drakes for $3000. :lol: :lol:
True, I think the throttle bodies where close to $1800 by themselves. :shock:

Something else, read somewhere that speed density systems don't like lots of throttle bodies, so the this setup might be hard to get working right.

The ideal would be an indivitual runner setup with injectors and one throttle body, in my opinion. :D
Author:  turbofish [ Sat Sep 22, 2007 3:10 pm ]
Post subject: 
Quote:
Something else, read somewhere that speed density systems don't like lots of throttle bodies, so the this setup might be hard to get working right.
IDK with megasquirt, but i know the ITB setups for the LS1 work awesome in SD, the only way u can run them. can smooth a huge cam down to reason. but ITB is complicated. the manifold design im goin to use is the design the japs use on their inline engines. here is a supra example. dunno how it would work N/A, but at least a decent design for FI something like
Image
Author:  slantzilla [ Sat Sep 22, 2007 4:20 pm ]
Post subject: 
Quote:
Quote:
Quote:
This has me about as excited as the turbo stroker 170 I would like to build someday.

Hey Matt, what about the setup the Drakes are using? Seems like what you have shown here is different than theirs. Any better?
I guarantee you can't buy a system like Drakes for $3000. :lol: :lol:
True, I think the throttle bodies where close to $1800 by themselves. :shock:
Tom posted once that they had around $10,000 in their fuel/engine management system. :lol:

I would really like to see a rundown on Cameron Tilley's setup on his Valiant. :D
Author:  Matt Cramer [ Sun Sep 23, 2007 6:06 am ]
Post subject: 
I haven't tuned ITBs on a Megasquirt yet, but if you aren't able to get it in tune with those, you can set it up for alpha-N or MAF.

A dedicated EFI manifold for 5.0 type throttle bodies would be an interesting possibility - probably not cheap, although it might be cheaper than ITBs.
Author:  HardCharger [ Mon Nov 23, 2009 6:57 pm ]
Post subject: 
I just happened upon the extrudabody web site for the first time tonight. I did a search to see if others here knew about it and found this thread.

They sure do have some cool stuff there. Has anyone taken the plunge and completed a Weber type EFI set up on their slant?

The Datsun set up sure looks sweet...

http://www.extrudabody.com/Products/ITBs.html

While this all looks cool, I'm leaning toward an Aussie 4 barrel MP set up with either a 4 barrel air only TB or a 5.0 single blade TB.
Author:  SlantSixDan [ Mon Nov 23, 2009 7:47 pm ]
Post subject: 
This may be a bit of a fork in the road (thread), but I've sort of had the final-year ('92? '93?) Ford 300cid inline-six MAF EFI system in mind to check out and see if it couldn't be lifted largely intact…

Those Extrudabody throttle bodies are nice-lookin' pieces. I seem to recall there being a similar product meant to bolt in place of SU/Zenith-Stromburg/Hitachi carbs, and the manifolds for those carbs for slant-6 engines are both more numerous in design and less costly to buy than the Weber items.
Author:  Reed [ Mon Nov 23, 2009 9:06 pm ]
Post subject: 
The only year for MAF Ford injection was 96 for the Ford 300. I have looked into it a bit, and it looks like there are several 96 year only parts necessary. Unfortunately, I have been told some fancy distributor modifications are necessary to get the Ford system to work: click me

The GM 3.8 system form the mid 80-s actually is a botl on system, provided you can fabricate a fuel rail and adapt the throttle body. it is triggered by the HEI module, which was my whole motivation for trying the HEI system out back when Goldduster 318 was putting it together.

THe Ford system seems more attactive because it is a multi-point system rather than a batch fire, and it is MAF instead of MAP. I really like the idea, but the fuel rail and fuel pump modifications keep holding me back from trying it out.
Author:  Joshie225 [ Mon Nov 23, 2009 9:20 pm ]
Post subject: 
Reed,

'96 was the 1st year for OBDII so there are probably quite a few '96 specific parts.
Page 1 of 3 All times are UTC-08:00
Powered by phpBB® Forum Software © phpBB Limited
https://www.phpbb.com/