![]() |
|
|||||||
| Fuel Injection Mods Modifications and improvements to Opel F.I. systems |
![]() |
|
|
LinkBack | Thread Tools | Display Modes |
|
|
#1 (permalink) |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
Unanswered: 3.0 EFI intake manifold modified for a 2.2 head
One major problem for those looking to run EFI on a 2.2 or 2.4 head is the lousy small-runner 2.2 intake manifold. It just chokes the airflow horribly, reducing the 2.2's intake port flow down to the levels of a 1.9 head with EFI (at that point why bother with the 2.2 head?). The 2.4 EFI manifold flows tons better, but it is so tall it does not fit under the hood of any US-spec Opels (it will in fact barely fit under the hood of a Kadett but the throttle body will almost hit the radiator!). An alternative which our European friends have discovered is to use the 3.0 litre inline 6 intake manifold, and cut off two of the runners, then weld the throttle body flange back to the plenum to create a 4-cylinder intake manifold. This intake manifold will then fit under the hood of most Opels thanks to its' lower profile, and it has the larger runners so necessary to provide airflow to a 2.2 or 2.4 head. So as time allows it, I will be modifying this intake manifold, flow testing it, and then fitting it to Samdog's roller-cam 2.5 litre engine in his 1975 Sportwagon, along with a programmable EFI system (probably Megasquirt). Fortunately, the 'leftover' fuel injectors and fuel rail from the Carlisle turbo Manta will fit this manifold and provide fueling above and beyond this engine's needs. It will also make this a reasonably priced swap.... Dyno results will be posted when completed. Bob |
|
|
|
|
|
#2 (permalink) |
|
Rice Cooker
Join Date: May 2002
Location: Spring Church, PA
Posts: 1,787
![]() |
Bob,
I'm glad to see you're trying one of these. I keep an eye on euro ebay and they pop up from time to time. I often see in their ads that they will fit Opel mantas and asconas but I never found anything on how well they work. Cool! Todd K.
__________________
"In the end, it's not the years in your life that count. It's the life in your years." -Abraham Lincoln ________________ 1972 GT 2.4L 1974 Manta GT/E 2.2L 1973 Manta Rallye 2.5L |
|
|
|
|
|
#3 (permalink) |
|
Site Admin
|
Gee, that looks awfully familiar. I'd better lock the Senator's hood if I bring it to Carlisle...
![]() Todd, Did you try Graham at "Only Opels" in the UK? http://www.onlyopels.co.uk/ |
|
|
|
|
|
#4 (permalink) | |
|
Cunning Linguist
Join Date: Mar 2002
Location: Plano, TX 75074
Posts: 4,441
Real Name: Otto
![]() Provided Answers: 13
|
__________________
1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P |
|
|
|
|
|
|
#5 (permalink) | |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
Bob |
|
|
|
|
|
|
#6 (permalink) | |
|
Member
Join Date: Mar 2004
Location: Paris, France, EEC.
Posts: 942
![]() |
Hi Bob, I'm glad this 30E manifold made it so fast to the US! You're absolutely right about the runners to select: German Opelers also say that the rear runners are better, But the manifold will be a little bit taller too, So it may not fit under the GT's hood, But it should be OK for the Ascona A. I'm very curious about your flowbench tests! Cheers from Paris, Hiro.
Last edited by Hiro; 11-14-2004 at 06:35 PM. |
|
|
|
|
|
|
#7 (permalink) |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
As you can see the 3.0 manifold is quite a bit shorter than the 2.4 manifold, so it should fit under the hood nicely. And my homemade fuel rail will just fit this new manifold. This will be interesting!
|
|
|
|
|
|
#8 (permalink) | |
|
Cunning Linguist
Join Date: Mar 2002
Location: Plano, TX 75074
Posts: 4,441
Real Name: Otto
![]() Provided Answers: 13
|
Begs the question, how 3.0 height compares to 2.2 manifold! Got one to compare? Share pic?
__________________
1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P |
|
|
|
|
|
|
#9 (permalink) |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
Sorry Otto, I no longer have any 2.2 manifolds. I chopped up the ones I had for their head flanges, but threw out the rest of the manifolds. They didn't serve any purpose to me.
|
|
|
|
|
|
#11 (permalink) |
|
70's Opeler, back 4 more!
Join Date: Apr 2003
Location: Shawnee, KS (Kansas City Area)
Posts: 409
![]() |
Gary,
That looks like the same manifold I have on my 2.0 EFI and it was not converted. Was the read powder coated or do you know? Mine had been painted, but the paint was peeling in areas so I stripped it down. I'm looking to either powder coat or chrome it.
__________________
Two left turns don't make a right, but three do! |
|
|
|
|
|
#12 (permalink) |
|
'NO,......O P E L..G T!'
Join Date: Jul 2003
Location: Lincoln, UK
Posts: 589
![]() Provided Answers: 1
|
3.0litres down to 2.4
Have just got hold of my 3litre plenum and have compared it against a 2litre and 2.2litre plenum.
The height difference between the 2.0 and 2.2 is minimal, mainly due to the 2.0 having the lower inlet ports. The 3.0 and 2.2 are quite different in height, but this difference depends on whether the measurements are based on using the front 4 pipes or the rear 4. I have some reservations that using the rear 4 will fit under a standard GT bonnet and with this in mind I'll be using the front 4 pipes. Hopefully the total cost of the modification will be about $80 including buying the plenum, chopping and welding and then painting. The other interesting note is the butterfly valve, it's huge on the 3litre and according to the guy who's helping me do the work this should have no problem getting air into my 2.4 motor.......after all the same butterfly is supplying the air flow to his 360bhp BMW 2002 Tekenaar have you fitted your yet and did you have to modify the bulkhead in any way for the rear pipe? Gary, I have to agree with Houserc, that manifold looks identical to my current 2litre plenum, are you sure it's a modified 3litre one?....either it's looks nice.
__________________
Mark I used to have an Opel....now i have a collection ![]() 69 GT 2.5 FI, Getrag, Irmscher Big Brakes, LSD, Lowered, 8" & 8.5" BBS RM's, Leather.....ex Dealer Opel Team 70 GT 1.9 Weber, 4 Speed 70 GT 1.9 Twin Weber, 4 Speed, Alloys 71 GT 2.0 Weber, Getrag, Lenk Styling, Alloys 71 GT 3.5 V8 Holley, RHD, TARGA, Leather Recaros 75 Commodore GS Coupe, 2.5 Twin Carb, Auto 76 Commodore GS/E Coupe, 2.8 FI, Auto, Alloys, LSD, Sunroof |
|
|
|
|
|
#13 (permalink) | |
|
Site Admin
|
|
|
|
|
|
|
|
#14 (permalink) |
|
Opelitis since 1984
Join Date: Mar 2002
Location: Midlothian, VA
Posts: 2,213
Real Name: Charles Goin
![]() Provided Answers: 3
|
Funny you guys should mention this particular intake.. seems if I remember having one kicking around in my garage somewhere. Something about doing a Bitter engine swap from another Bitter..
If anyone is interested email me.. BTW whats it worth? Charles
__________________
CURRENT '06 Pontiac GTO '71 Opel Kadett 4 Door 36D (w/ Opel Parts & Service 2.0L) '74 Opel Manta (Bens Manta) '74 Opel Manta (w/ LK5 transplant) Past '73 Opel Manta (Blue Max) '75 Opel Manta (Yellow) '85 Bitter SC '73 Opel Commodore B GS '73 Opel GT (w/ Vinyl Roof) At least 16 or So Parts Opels |
|
|
|
|
|
#15 (permalink) | |
|
Have Opel, Will Travel
|
__________________
1958 Rekord Sedan, 1958 Olympia Wagon, 1959 Opel Olympia Sedan, 1967 Kadett Coupe, 1967 Admiral Sedan 4L CIH-6, 1968 Kadett fastback 1.1L, 1970 Kadett Wagon Turbo 2.2L, 1971 Kadett Sedan 1.1L, 1975 Manta Wagon 4.3L V-6 |
|
|
|
|
|
|
#16 (permalink) |
|
Opelitis since 1984
Join Date: Mar 2002
Location: Midlothian, VA
Posts: 2,213
Real Name: Charles Goin
![]() Provided Answers: 3
|
Not normally, when you get a motor you usually just get the block and head, and timing cover. That said, I am sure it won't be a problem. That is if I can find it.. It was sitting outside my brother-in-laws garage for almost a year, I think we finally put it somewhere (Storage shed behind his garage if memory serves). If I had know it was special and worth something I would have probably treated it with more respect...
Anyway. look forward to seeing you.. I think I know what I am doing Saturday.. probably something like trying to get stuff moved in my garage to get the stuff for you out. Hopefully I don't have to drop the Manta to do it.. Charles
__________________
CURRENT '06 Pontiac GTO '71 Opel Kadett 4 Door 36D (w/ Opel Parts & Service 2.0L) '74 Opel Manta (Bens Manta) '74 Opel Manta (w/ LK5 transplant) Past '73 Opel Manta (Blue Max) '75 Opel Manta (Yellow) '85 Bitter SC '73 Opel Commodore B GS '73 Opel GT (w/ Vinyl Roof) At least 16 or So Parts Opels |
|
|
|
|
|
#17 (permalink) |
|
Opeler
Join Date: Jun 2002
Location: Tallahassee, FL
Posts: 72
![]() |
Sizing the air plenum
Does anyone know if there is an equation or a min/max amount of air volume the plenum should have. Even better would be if any one can get alittle technical as to it's exact purpose.
Basically I'm assuming you can't just drill a couple of holes in a stock intake for the 1.9 for the injectors. then bolt a throttle body in place of the carb. But then again, maybe you can???
__________________
Proud new Daddy of twin yellow opel GT's |
|
|
|
|
|
#18 (permalink) |
|
6,000 Post Club
Join Date: Aug 2002
Location: Imperial Beach, CA South of San Diego
Posts: 6,054
![]() Provided Answers: 6
|
Marcus, a plenum is nothing more than a reservoir for the intake stroke on an engine. A standard intake manifold needs the individual tubes to help direct the fuel vapor into the correct cylinder when that valve opens. The real neat thing about a plenum is, with fuel injection and a turbo charger, there's no fuel vapor to worry about getting into the nooks and crannies where the corners and other deformaties in the plenum would trap the fuel vapors. In a turbo application, the plenum would normally keep a pressure charge during steady state throttle operations, so that an increase in throttle could possibly decrease the turbo lag until the turbo catches up with the demands of the engine. As far as a min/max size, they can be up to 3" or larger in diameter and as long as the engine. The larger the plenum, the more air available for the cylinder to fill up when the intake valve opens. HTH.
__________________
Ron 72 GT 3.4L V-6/T-5/ZF posi - almost done - Just need AC installed. ![]() 75 Chevy monza 5.7L/TH350/Auburn 3.08 posi - Next |
|
|
|
|
|
#19 (permalink) | |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
RE using the carb's intake for EFI: There's no reason you couldn't do it the way you suggested from a function point of view. But from a performance point of view the stock intake is severely lacking in airflow. Bob |
|
|
|
|
|
|
#20 (permalink) |
|
Opeler
Join Date: Sep 2003
Location: holland
Posts: 44
![]() |
here in holland the cut off manifolds are frequently used on 2.4 engines. in sweden or finland, some guys have tested all the set ups possible by chopping off different parts. the outcome was that there was no significant diffrence in performance!
so what will fit best, is the way to go |
|
|
|
|
|
#21 (permalink) |
|
Old Opeler
Join Date: Jun 2003
Location: New Zealand
Posts: 5,686
![]() Provided Answers: 12
|
Snap!
Just found a 3.0 E Opel injection system way out here - only problem is that it is still attached to a WHOLE 1983 Opel Monza 3.0E
Really, Dear - It just followed me home!
__________________
GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved |
|
|
|
|
|
#22 (permalink) |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
A few updates. I chopped the 3.0 EFI intake down to fit a 4-cylinder CIH 2.2/2.4 engine. I also ordered a 65 mm Ford Mustang throttle body. When that arrives I'll make a 1/2" thick adapter and weld it to the intake plenum to affix the Mustang TB.
In the meantime a bit of grinding and polishing was done to the intake to prepare it for either paint or powdercoating (haven't decided yet). When all these parts come together the next step is to order a Megasquirt and a bigger EFI pump, and put it all on the 2.5 roller cam '75 wagon. I'm hoping to bump power from 152 whp up to the 175-180 whp range. That works out to around 205-210 flywheel hp for a streetable normally aspirated engine that runs on pump gas. Can't wait to dyno it! |
|
|
|
|
|
#24 (permalink) |
|
70's Opeler, back 4 more!
Join Date: Apr 2003
Location: Shawnee, KS (Kansas City Area)
Posts: 409
![]() |
What injectors are you looking to use with this setup?
I was talking with RC Engineering http://www.rceng.com/Default.htm about replacements for the stock injectors I'm running. Seems the injector that I have was the European injector.
__________________
Two left turns don't make a right, but three do! |
|
|
|
|
|
#25 (permalink) | |
|
Project 1450 supporter...
Join Date: Mar 2002
Location: Pleasant Valley, CT
Posts: 7,452
Real Name: Bob Legere
![]() ![]() Provided Answers: 20
|
So I had these new 'leftover' hose-barb style injectors hanging around with a brand-new custom fuel rail, and when I checked the fitment they bolted right up to the 3.0 manifold. They will safely meet my 200 hp goals for this engine, with the potential to go up to 230-240 if needed. Info here: http://www.opelgt.com/forums/showpos...36&postcount=4 These are pretty readily available and not too expensive, plus they will fit to a stock 1.9 fuel rail. They are low impedence injectors, so they are not compatible with later Euro stuff (2.0/2.2 ECU's). HTH, Bob |
|
|
|
|
![]() |
| Bookmarks |
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
| Display Modes | |
|
|