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Drove bosses 242 turbo Group A. What a Blast!!!

RichGT said:
That 7 series coolant bottle - for the water injection?
Im thinking US exports needed the A/C as standard, otherwise would have been considered unacceptable (assuming most US cars went to west coast). Maybe same with sunroof and power windows - these options would just be PITA in winter.

Back to Volvo's naughty non-installation of special parts to homolagate. How about a register based on the "800" code timing belt covers, see if they are indeed all 242Ts. I know those labels do tend to survive well.

It would be cool if the surviving US homologated/EVO 242Ts where built to their correct and intended specification. mostly Merc FI injection parts widely available on Merc W124, gold injectors, LH AMM, although I suppose almost noone is interested in high performance k-jet. Most people will say why, but it would be cool to build a 350hp 242T the way they did in 1984. Im thinking the build cost would not be too high, but interest factor would be...but I'm an old fart lol
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Don't understand what you are trying to say about the coolant overflow bottle. It has a 7 series one on it. Has nothing to do with the H2O injection.

They sold 240 DL's in 83 with no a/c, no sunroof, no power windows. So it's not a US export thing.

I have an 83 245 DL outside, timing belt cover has a 803 sticker on it.

When was the last time you tried to get gold injectors? They aren't available in the US as far as I know.
 
Tuff240 said:
Interesting that the white car has a 7 series style coolant bottle and bracket, 7 series boost recirculation valve and battery relocated. It also has no a/c, which all of the US Turbo cars had A/C.

Does your red 242 have a sunroof? Power windows?
All of the 1983-85 US 240 Turbo 242/244's had sunroofs and power windows.

If you ever get the chance or if you still know anyone, ask how many they made and if they ever offered the hood and grill treatment to "regular" cars. For the longest time the story has been 500 of these cars, but I have personally owned 5 and seen around 50 more of them and that just seems like a really high percentage if only 500 were spread around the world.
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Well all Evolution cars I have seen have the 7 series style colant bottle.

The white car does not show how the Evolution cars were supposed to look, the image from the homologated document does. it?s from the description how to turn a standard B21ET to a B21ETL 225hp competition engine under Grupp-A regulation. You have to remove the A/C and battery to fit the big intercooler, pre owner of my car did that too.

My car has sun roof, A/C (removed), power windows, power rearview mirror, black leather.
it also has a sticker on the window with Carlifornia emission data.

I have heard 500 cars and and all were meant for the US market. The only two cars that I know were sold here is my car and the white that VMS kept and maybe a black one.

Exactly what do you mean with hood and grill treatment?

/Daniel
 
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RichGT said:
That 7 series coolant bottle - for the water injection?
Im thinking US exports needed the A/C as standard, otherwise would have been considered unacceptable (assuming most US cars went to west coast). Maybe same with sunroof and power windows - these options would just be PITA in winter.

Back to Volvo's naughty non-installation of special parts to homolagate. How about a register based on the "800" code timing belt covers, see if they are indeed all 242Ts. I know those labels do tend to survive well.

It would be cool if the surviving US homologated/EVO 242Ts where built to their correct and intended specification. mostly Merc FI injection parts widely available on Merc W124, gold injectors, LH AMM, although I suppose almost noone is interested in high performance k-jet. Most people will say why, but it would be cool to build a 350hp 242T the way they did in 1984. Im thinking the build cost would not be too high, but interest factor would be...but I'm an old fart lol

Daniel, it would be good to get a comprehensive spec for your car if you're willing to share
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It is the windshield washer water reservoir that was used for the water injection.

The Evolution car was not homologated with the big Group-A K-jet it was homologated later 1984 and it is not a mercedes K-jet it was a Prototype made for Group-A. Volvo paid 36000 sek / 4424 US dollar apiece back then from Bosch Motorsport even the Gold injector is made for Group-A. I?m very lucky to have one of the big K-jet on my car.

Absolutely I will come back with that, exactly what du you want to know?

Daniel
 
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7 series coolant bottle - yeah I see in pic now
US options - I was just speculating, ignore me
Fuel dist - that's interesting, not the Merc part!
Gold injectors - Bosch part no. NLA, but must be an equivalent
500 v 5000 - so Daniel, the Evo 500 was part of a total 5000 homologation run, or in addition to it? (all irrelevant though I guess if original build difficult to replicate)
 
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RichGT said:
7 series coolant bottle - yeah I see in pic now
US options - I was just speculating, ignore me
Fuel dist - that's interesting, not the Merc part!
Gold injectors - Bosch part no. NLA, but must be an equivalent
500 v 5000 - so Daniel, the Evo 500 was part of a total 5000 homologation run, or in addition to it? (all irrelevant though I guess if original build difficult to replicate)
Click to expand...

I have a magazine from Volvo called "Ratten" from 1984 with an article that says:

"To participate in Group-A required 5000 cars in basic 240 turbo in one year. After that if you want to be more competitive you can build an Evolution serie of 500 cars. Late summer 1983 FISA inspected and approved that serie. The most part of that serie are already sold in US and they have about 200hp. In this context Volvo got as the first manufacturer in world water injection homologated and approved for racing"

The fuel distributer have much bigger metering slits and nozzles so you can block off 4 outputs.
The air flow sensor are special with interchangeable air cons. "Gold injector" is a brass injector with Bosch nr B 437 720 706 (B is Motorsport) is supposed to have a better spray pattern at high flow. They don?t flow more that?s wrong, the flow is controlled by the fuel distributor the injector only atomizes the fuel.

/Daniel
 
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185427-94abcf7eabe990e5483d09d7363f7192.jpg


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My big Group-A K-jet in action:

https://www.youtube.com/watch?v=xs1gTdUrmN4&nohtml5=False

/Daniel
 
Grupp-A said:
I have a magazine from Volvo called "Ratten" from 1984 with an article that says:

"To participate in Group-A required 5000 cars in basic 240 turbo in one year. After that if you want to be more competitive you can build an Evolution serie of 500 cars. Late summer 1983 FISA inspected and approved that serie. The most part of that serie are already sold in US and they have about 200hp. In this context Volvo got as the first manufacturer in world water injection homologated and approved for racing"

The fuel distributer have much bigger metering slits and nozzles so you can block off 4 outputs.
The air flow sensor are special with interchangeable air cons. "Gold injector" is a brass injector with Bosch nr B 437 720 706 (B is Motorsport) is supposed to have a better spray pattern at high flow. They don?t flow more that?s wrong, the flow is controlled by the fuel distributor the injector only atomizes the fuel.

/Daniel
Click to expand...

Interesting. Would you scan the article (as well as the magazine cover) and post it in this thread for posterity?
 
Posting this here again from a thread in 2008. Sorry to dredge this up but it's interesting, It is from Dick Prince, he bought a Norwegian GroupA 242T:

"...I thought it was worth resurrecting this old thread with a few facts. I recently bought a complete ex-Gp-A motor and K-Jetronic system from Norway - out of a Zakspeed Capri but last overhauled by Jorgen Poulsen in 2002. The injectors (yes - gold) are marked B437720706 - a number I have never come across before. Probably from the special batch Bosch made for Porsche Turbos and the Gp-A 240T. They flow heaps, but not uniformly at this late stage in their life.

The K-Jetronic fuel distributor is marked 4250/17979F. Close to the number listed at http://hem.passagen.se/arrowsmiths/branslehuvud.html (bottom of the page) as:
“Used: Porsche-Turbo (500hp) & Group-A (big) Turbo Volvo-240 (400hp). No technical Data Available (Bosch R-Sport Stuff)”.

With 3/8" ID fuel lines to the injectors this setup flows 800cc/min/injector at wide open flapper (before it has to feed into an inlet manifold at turbo boost pressure), so I hope my fuel flow problems in the restored 240T Gp-A are nearly over..."

This from the guy who raced prepared the to drive with Francevic to run in historic events back in 2011.

Daniel, do you know if Bosch still produce an equivalent gold injector to the 437720706 used for 240T Grp A? There are a bunch of guys like yourself who still run them.
 
RichGT said:
Posting this here again from a thread in 2008. Sorry to dredge this up but it's interesting, It is from Dick Prince, he bought a Norwegian GroupA 242T:

"...I thought it was worth resurrecting this old thread with a few facts. I recently bought a complete ex-Gp-A motor and K-Jetronic system from Norway - out of a Zakspeed Capri but last overhauled by Jorgen Poulsen in 2002. The injectors (yes - gold) are marked B437720706 - a number I have never come across before. Probably from the special batch Bosch made for Porsche Turbos and the Gp-A 240T. They flow heaps, but not uniformly at this late stage in their life.

The K-Jetronic fuel distributor is marked 4250/17979F. Close to the number listed at http://hem.passagen.se/arrowsmiths/branslehuvud.html (bottom of the page) as:
“Used: Porsche-Turbo (500hp) & Group-A (big) Turbo Volvo-240 (400hp). No technical Data Available (Bosch R-Sport Stuff)”.

With 3/8" ID fuel lines to the injectors this setup flows 800cc/min/injector at wide open flapper (before it has to feed into an inlet manifold at turbo boost pressure), so I hope my fuel flow problems in the restored 240T Gp-A are nearly over..."

This from the guy who raced prepared the to drive with Francevic to run in historic events back in 2011.

Daniel, do you know if Bosch still produce an equivalent gold injector to the 437720706 used for 240T Grp A? There are a bunch of guys like yourself who still run them.
Click to expand...

Yes you can use the Mercedes brass injector Bosch 0 437 502 047 they look the same and I can't see any difference in spray pattern. I'm using that injector in that video link I posted because my Group-A injectors are in bad shape. Now I'm using the original B21ET injector Bosch 0 437 502 020.

/Daniel
 
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Sorry for the delay here it is please enjoy, Front, Rally driver Sunsanne Kottulinsky and the 500 Evo?s and how water injection works.







/Daniel
 
This is from Rally and racing 1985, problems for Volvo the competitors did everything to get rid of Volvo. The magazine Autosport claims that the 500 Evolutions are supposed to be sold through normal channels but they didn?t so FISA want to cancel the homologation of the 500 Evolution cars.

2013-04-15-12-00-23_img095_1985.jpg


/Daniel
 
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