Multipoint Fuel Injection, who has it?

J

Jim Hupy

New member
May 28, 2010
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Does anyone care to comment on their multipoint FI systems? Good, bad,
otherwise. Include whether you have it on a 455 or a 403 if possible. If it
is a home brewed project or a kit from some company. It is time to jerk
more of us into the 21st Century. There has not been an original equipment
manufacturer supplying carburetors on new models for at least 20 years in
this country. I am not interested in a carb vs FI discussion with this
post. What have you got?
Jim Hupy
Salem, OR
78 GMc Royale 403
 
There are a bunch who have throttle body fuel injection. My understanding is that at the RPM's we turn the difference between throttle body and port fuel injection is small.

It's also my understanding that adding electronic spark control with knock sensors adds as much to drivability as the fuel injection. Taking the mechanical distributor out of the mix helps a bunch!

I plan to add both in September of 2009. I'll have to adjust my plan...

That said, you have a lot of options with a 403.

Larry Davick

> Does anyone care to comment on their multipoint FI systems? Good, bad,
> otherwise. Include whether you have it on a 455 or a 403 if possible. If it
> is a home brewed project or a kit from some company. It is time to jerk
> more of us into the 21st Century. There has not been an original equipment
> manufacturer supplying carburetors on new models for at least 20 years in
> this country. I am not interested in a carb vs FI discussion with this
> post. What have you got?
> Jim Hupy
> Salem, OR
> 78 GMc Royale 403
 
> Does anyone care to comment on their multipoint FI systems? Good, bad,
> otherwise. Include whether you have it on a 455 or a 403 if possible. If it
> is a home brewed project or a kit from some company. It is time to jerk
> more of us into the 21st Century. There has not been an original equipment
> manufacturer supplying carburetors on new models for at least 20 years in
> this country. I am not interested in a carb vs FI discussion with this
> post. What have you got?
> Jim Hupy
> Salem, OR
> 78 GMc Royale 403
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist


Hi Jim

I am running an AirSensor mass airflow system and am pleased with it except for my cold wart issues I do not have the fifth injector installed for cold start, so I have to manually increase the mixture when cold. Runs great when at operating temps.
HTH
--
John H. Bell
77 Royale
Montreal Qc.
 
In California, thanks to our do-nothing legislature (well, often they do screw us over), you can't put a FI system on any GMC 76 or later because of smog test requirements.
--
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
'65 Clark Cortez,
Sebastopol, CA
 
That's why everyone should have a 1976(ish) GMC Motorhome.

There are benefits to having a "Mystery Machine."

Larry Davick
Happily able to do what I like to the coach.

>
>
> In California, thanks to our do-nothing legislature (well, often they do screw us over), you can't put a FI system on any GMC 76 or later because of smog test requirements.
> --
> Jack Christensen - K6ROW,
> '76 Glenbrook/Clasco - "The Silver Bullet",
> '65 Clark Cortez,
> Sebastopol, CA
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
 
> Does anyone care to comment on their multipoint FI systems? Good, bad,
> otherwise. Include whether you have it on a 455 or a 403 if possible. If it
> is a home brewed project or a kit from some company. It is time to jerk
> more of us into the 21st Century. There has not been an original equipment
> manufacturer supplying carburetors on new models for at least 20 years in
> this country. I am not interested in a carb vs FI discussion with this
> post. What have you got?
> Jim Hupy
> Salem, OR
> 78 GMc Royale 403
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Homebrew multiport 455 with a Megasquirt 3 controller. Coil packs and crank position sensor. I'm not using any of the original fuel or spark arrangements. Really like how it runs. Had great hope for better mileage but have not really seen it.
--
Wally Anderson
1975 Glenbrook
Megasquirt 455 port injection science project-On the road 10,388 miles
Omaha Nebraska
Greater Midwest Classics
GMCES
http://wallyandsue.blogspot.com/
 
Hi Guys:

What Knock Sensor are you using and where are you putting it on yourf 455s I understand they may be pipe thread and installed in the coolant drain hole. I'm just installing my engine and would like to purchase one install it before putting coolant in.
Thanks. :d
--
John and Cathie Heslinga
1974 Canyonlands 260
TC4W "Too Cool For Words"
Retirement Projects Galore
Edmonton, Alberta
 
> Hi Guys:
>
> What Knock Sensor are you using and where are you putting it on yourf 455s I understand they may be pipe thread and installed in the coolant drain hole. I'm just installing my engine and would like to purchase one install it before putting coolant in.
> Thanks. :d

Hi John,
You might want to look over on the efi group
http://groups.google.com/group/gmcmh-efi?hl=en
on this thread
http://groups.google.com/group/gmcmh-efi/browse_frm/thread/1fafa7a5b609931/22524a15227ca56e?hl=en&lnk=gst&q=knock
That said the sensor most are using does mount in a 1/4 npt threaded hole on the pass side.
Another option is a J&S Safeguard which will work stand alone with your carb and whatever injection system you choose.
http://www.jandssafeguard.com/
Safeguard uses a Bosch sensor that mounts on a stud or bolt. Jim K can set you up with a safeguard.
--
Wally Anderson
1975 Glenbrook
Megasquirt 455 port injection science project-On the road 10,388 miles
Omaha Nebraska
Greater Midwest Classics
GMCES
http://wallyandsue.blogspot.com/
 
Knock sensor element is not as simple as we have been taught.
Some are very sensitive to frequency and will not work that well.
Sometimes we need to use adapters to fit different pipe thread sizes.
Jim Kanomata
Applied/GMC, Fremont,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
Heaven forbid someone convert to EFI in California and run in closed loop with constant computer monitoring of mixture and timing to lower emissions. AND this is from someone who still has a Qjet. Rules Shmools! Backwards.
--
John Lebetski
Chicago, IL
77 Eleganza II
 
In California, we will remove the rail and plug the 8 injector hole
and mount a carb and a vacuum control ed distributor and are cleaner
and get it passed.
I hate it when they see the turbos and try to make an issue, just for
that I have another exhaust section.

>
>
> Heaven forbid someone convert to EFI in California and run in closed loop with constant computer monitoring of mixture and timing to lower emissions. AND this is from someone who still has a Qjet. Rules Shmools! Backwards.
> --
> John Lebetski
> Chicago, IL
> 77 Eleganza II
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
> In California, we will remove the rail and plug the 8 injector hole
> and mount a carb and a vacuum controled distributor and are cleaner and get it passed.
> I hate it when they see the turbos and try to make an issue, just for that I have another exhaust section.

Jim,

This is an honest question.
Wouldn't it be easier to find a derelict '73~4, buy it and use the ID plate and title to register the coach with that VIN?

I did build a Model T Ford pick up as a hotrod years ago. Blown Hemi and such. It had and fiberglass body and a fabricated frame. It was registered in NY as a recovered vehicle and subject to the rule in place for a 1917 vehicle.

Could not California residents make use of some similar trick?

Actually any body with California experience might have an answer for me.

Thanks

Matt
--
Matt & Mary Colie
'73 Glacier 23 Chaumiere (say show-me-air) Just about as stock as you will find
SE Michigan - Twixt A2 and Detroit
 
Matt, That is called fraud and owning a GMC is NOT worth going to jail for.

________________________________
From: Matt Colie
To: gmclist
Sent: Sun, November 6, 2011 2:49:25 PM
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

This is an honest question.
Wouldn't it be easier to find a derelict '73~4, buy it and use the ID plate and
title to register the coach with that VIN?

I did build a Model T Ford pick up as a hotrod years ago. Blown Hemi and such.
It had and fiberglass body and a fabricated frame. It was registered in NY as a
recovered vehicle and subject to the rule in place for a 1917 vehicle.

Could not California residents make use of some similar trick?

Actually any body with California experience might have an answer for me.
 
It is only fraud when you get caught.  Both Alabama and Georgia will issue a title for a 70s coach based on a hand written bill of sale, Georgia will usually have the guy from the tag office walk out and look.  Get the patent plate, send me a pic of it, and I'll sel you the 'coach' for a dollar and Other Valuable Consioderations.  You can then title it here and present the title to the bureaucrats there. 
 
--johnny
 

________________________________
From: Terry Taylor
To: gmclist
Sent: Sunday, November 6, 2011 6:33 PM
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

Matt, That is called fraud and owning a GMC is NOT worth going to jail for.

________________________________
From: Matt Colie
To: gmclist
Sent: Sun, November 6, 2011 2:49:25 PM
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

This is an honest question. 
Wouldn't it be easier to find a derelict '73~4, buy it and use the ID plate and
title to register the coach with that VIN? 

I did build a Model T Ford pick up as a hotrod years ago.  Blown Hemi and such. 
It had and fiberglass body and a fabricated frame.  It was registered in NY as a
recovered vehicle and subject to the rule in place for a 1917 vehicle.

Could not California residents make use of some similar trick? 

Actually any body with California experience might have an answer for me. 
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
 
Register it in washington or oregon or arizona

Sully
77 royale
------Original Message------
From: Matt Colie
Sender: gmclist-bounces
To: gmclist
ReplyTo: gmclist
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?
Sent: Nov 6, 2011 2:49 PM

> In California, we will remove the rail and plug the 8 injector hole
> and mount a carb and a vacuum controled distributor and are cleaner and get it passed.
> I hate it when they see the turbos and try to make an issue, just for that I have another exhaust section.

Jim,

This is an honest question.
Wouldn't it be easier to find a derelict '73~4, buy it and use the ID plate and title to register the coach with that VIN?

I did build a Model T Ford pick up as a hotrod years ago. Blown Hemi and such. It had and fiberglass body and a fabricated frame. It was registered in NY as a recovered vehicle and subject to the rule in place for a 1917 vehicle.

Could not California residents make use of some similar trick?

Actually any body with California experience might have an answer for me.

Thanks

Matt
--
Matt & Mary Colie
'73 Glacier 23 Chaumiere (say show-me-air) Just about as stock as you will find
SE Michigan - Twixt A2 and Detroit
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

Sent from my Verizon Wireless BlackBerry
 
Or look into "collector vehicle,historic vehicle" status. Registered mine that way in washington and never have to go to emissions or buy tags

Sully
77 royale
Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: Johnny Bridges
Sender: gmclist-bounces
Date: Sun, 6 Nov 2011 16:15:38
To: gmclist
Reply-To: gmclist
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

It is only fraud when you get caught.  Both Alabama and Georgia will issue a title for a 70s coach based on a hand written bill of sale, Georgia will usually have the guy from the tag office walk out and look.  Get the patent plate, send me a pic of it, and I'll sel you the 'coach' for a dollar and Other Valuable Consioderations.  You can then title it here and present the title to the bureaucrats there. 
 
--johnny
 

________________________________
From: Terry Taylor
To: gmclist
Sent: Sunday, November 6, 2011 6:33 PM
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

Matt, That is called fraud and owning a GMC is NOT worth going to jail for.

________________________________
From: Matt Colie
To: gmclist
Sent: Sun, November 6, 2011 2:49:25 PM
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

This is an honest question. 
Wouldn't it be easier to find a derelict '73~4, buy it and use the ID plate and
title to register the coach with that VIN? 

I did build a Model T Ford pick up as a hotrod years ago.  Blown Hemi and such. 
It had and fiberglass body and a fabricated frame.  It was registered in NY as a
recovered vehicle and subject to the rule in place for a 1917 vehicle.

Could not California residents make use of some similar trick? 

Actually any body with California experience might have an answer for me. 
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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>
>

>> In California, we will remove the rail and plug the 8 injector hole
>> and mount a carb and a vacuum controled distributor and are cleaner and get it passed.
>> I hate it when they see the turbos and try to make an issue, just for that I have another exhaust section.
>
> Jim,
>
> This is an honest question.
> Wouldn't it be easier to find a derelict '73~4, buy it and use the ID plate and title to register the coach with that VIN?
>
> I did build a Model T Ford pick up as a hotrod years ago. Blown Hemi and such. It had and fiberglass body and a fabricated frame. It was registered in NY as a recovered vehicle and subject to the rule in place for a 1917 vehicle.
>
> Could not California residents make use of some similar trick?
>
> Actually any body with California experience might have an answer for me.
>
> Thanks
>
> Matt

It may be an honest question but its a dishonest solution.
If caught doing it in California there are some massive fines involved.

Emery Stora
77 Kingsley
Santa Fe, NM
 
Hi

I was going thru the paper work for my AirSenors manual and found something that may help the Owners in the People's Repulic of Califorfia.
My AirSensor system has a C.A.R.B. (E.O.) D-163 exemption for vehicles with a GWVR of 8500lbs or more
HTH
--
John H. Bell
77 Royale
Montreal Qc.
 
Does anyone produce a system like the CIS and CIS-E stuff which VW used?  Simple and effective.  It seemed to do a better job of distribution than a TBI, but was cheaper and less complex than a pulsed port injection system.
 
--johnny
 

________________________________
From: jhb1
To: gmclist
Sent: Monday, November 7, 2011 7:49 PM
Subject: Re: [GMCnet] Multipoint Fuel Injection, who has it?

Hi

I was going thru the paper work for my AirSenors manual and found something that may help the Owners in the People's Repulic of Califorfia.
My AirSensor system has a C.A.R.B. (E.O.) D-163 exemption for vehicles with a GWVR of 8500lbs or more
HTH
--
John H. Bell
77 Royale
Montreal Qc.
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