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Aaron M265
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Joined: March 31, 2008
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Location: Adelaide, South Australia
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 Posted: Fri Dec 04, 2009 6:48 pm Post subject: 1500 'S' M249 Option |
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VW 1500 ‘S’ M249 Option
I decided to put this document together a while back after seeing some information posted by Scott Taylor on his fantastic VW+VW1500 blog.
My 1964 1500 'S' (C # 315 031 871, E # 0 682 209) came equipped with this option, however when I quizzed VW in Germany, they had little back ground information on what this option was.
Thus I was compelled to pull all the information together (with Scott's help) and here we have it.
I hope you enjoy it.
Overview
This document outlines the specifications and performance figures for VW 1500 ‘S’ vehicles produced during 1964 & 1965, fitted with the M249 option.
The M249 option substituted the 1500 ‘N’ flat-top pistons for the 1500 ‘S’ high-compression dome-top pistons, effectively lowering the compression from 8.5:1 to 7.8:1 and allowing the use of regular fuel.
They looked outwardly identical to the standard 1500 ‘S’ engines except for a metal plate attached to the crankcase breather stand and a letter ‘N’ stamped on the case (*1).
To avoid confusion, the standard high-compression 1500 ‘S’ engine cases were stamped ‘R’ (*2), as this chart from the VW Workshop Manual shows:
(*1)- ‘N’ stamped into VW 1500 ‘S’ M249 engines (63.5 bhp) adjacent to Engine #
(*2)- ‘R’ stamped into VW 1500 ‘S’ engines (66 bhp) adjacent to Engine #
(from 18 February 1965, Chassis # 315 124 961, Engine # 0 878 040)
Note:
A twin-carburettor engine with flat crown pistons is available for use in countries where premium fuel with an octane rating of more than 95 (Res. F1) is not available.
This engine requires fuel with a rating of at least 90 octane and has an aluminium plate with the wording
M249
90 Octane
fixed to the two front screws of the breather mounting.
Part No’s.
Engine, complete 311 100 021J
Piston 83 mm dia. 311 107 101J
Twin-carburettor Engine
Capacity 1493cc (as before)
Compression ratio 7.8:1
Maximum output (DIN) 52 bhp at 4200 rpm
(SAE, with air cleaner) 63.5 bhp at 4800 rpm
Maximum torque (DIN) 10.4 mkg (75.2 ft. lbs) at 2400 rpm
(SAE, with air cleaner) 11.1 mkg (80.2 ft. lbs) at 3000 rpm
Ignition timing 10’ before TDC (as before)
Performance
Maximum and cruising speed approx 132 kph (81 mph) (sedan & variant) 142 kph (88 mph) (Karmann)
At an engine speed of approx 4150 rpm (sedan & variant) 4450 rpm (Karmann)
Road speed at 4200 engine rpm:
1st gear approx 31 kph (19 mph) (sedan & variant) 31 kph (19 mph) (Karmann)
2nd gear approx 58 kph (36 mph) (sedan & variant) 58 kph (36 mph) (Karmann)
3rd gear approx 90 kph (56 mph) (sedan & variant) 90 kph (56 mph) (Karmann)
4th gear approx 133 kph (82 mph) (sedan & variant) 133 kph (82 mph) (Karmann)
Reverse approx 30 kph (18 mph) (sedan & variant) 30 kph (18 mph) (Karmann)
Hill climbing ability, on good roads, with two occupants:
1st gear approx 44.0% (sedan) 44.0% (Karmann) 37.0% (variant 375 kg) 36.0% (variant 465 kg)
2nd gear approx 22.5% (sedan) 22.5% (Karmann) 19.0% (variant 375 kg) 18.0% (variant 465 kg)
3rd gear approx 13.5% (sedan) 13.5% (Karmann) 11.0% (variant 375 kg) 10.5% (variant 465 kg)
4th gear approx 7.5% (sedan) 8.0% (Karmann) 6.5% (variant 375 kg) 6.0% (variant 465 kg)
*) With half payload
Acceleration times (through the gears)
from 0 - 80 kph (50 mph) approx 13 seconds (sedan & variant) 13 seconds (Karmann)
from 1 - 100 kph (62 mph) approx 21 seconds (sedan & variant) 20 seconds (Karmann)
from 80 – 100 kph (50 – 62 mph approx 8 seconds (sedan & variant) 7 seconds (Karmann)
Fuel Consumption
Average fuel consumption (tested in
Accordance with German regulations) per 100 km 8.1 litres 8.2 litres
(Imp. 35 mpg; US. 29 mpg) (34.5; 28.6)
Fuel rating 90 Octane (Res. F1)T-1
10
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Aaron
http://1500notchback.blogspot.com/
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Russ Wolfe
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| Posted: Fri Dec 04, 2009 7:11 pm Post subject: |
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I note that the picture you post looks like it still has the "4R3" distributor.
My 64 1500S did not have any of the extra stampings in the engine number. It was an all original 1500S that the engine had never been out of.
I have the original factory documents verifying that the engine is original to the chassis.
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t3kg
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BerT3
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| Posted: Sat Dec 05, 2009 1:10 am Post subject: |
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I do have a white paint stamp with that code in front of the fan housing on my T34 !
NO tag
I might have a photo somewhere
BerT3 |
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Russ Wolfe
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| Posted: Sat Dec 05, 2009 9:15 am Post subject: |
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M249 also stands for automatic trans in the later cars.
That would explain Bert's markings.
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BerT3
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| Posted: Sat Dec 05, 2009 9:23 am Post subject: |
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| Russ Wolfe wrote: |
M249 also stands for automatic trans in the later cars.
That would explain Bert's markings. |
The car in question a my '66 manual with a '65 S specification engine
BerT3 |
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Aaron M265
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Joined: March 31, 2008
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Location: Adelaide, South Australia
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| Posted: Sat Dec 05, 2009 4:22 pm Post subject: |
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Aaron, does your car have the N stamp next to the engine number?
No mine doesn't Scott as my car is a September 64 model. As you correcrly pointed out, the 'N' or 'R' stamping was only from February 65.
Yes VW also re-used the M249 code for automatic transmissions later in life but that's irrelevant here.
My car has the M249 alumimium tag still attached to the breather stand too.
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T3+4_Mike
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Location: North Central Massachusetts
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| Posted: Sun Jun 05, 2011 9:50 am Post subject: |
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I know that this is an old post, but I stumbled upon it while searching for some information on my car. I just bought a 1965 Notchback 1500S. The original motor has been swapped out with my gues a factory rebuilt one as the first litter is a U, but thats besides the point. What I was wondering is, I noticed while cleaning up the front apron, there was a sticker that said "90 Oktan" on it. I was wondering if this car originally came with the M249 option motor? I have not seen one of those stickers before as none of my other cars have one. If it did, how hard would it be to find one? Thanks for any information.
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1 rusty low vin-ed 1967 squareback- very long restoration project
1973 412 4-door sedan, basket case to say the least
1967 fastback, rat rod build
1969 fastback,
1965 Notchback, The mother's summer car now! http://www.thesamba.com/vw/forum/viewtopic.php?t=477439
1986 Jetta Diesel 5spd, Was the beater, now currently undergoing an overhaul
1995 Chevrolet Caprice, The daily driver and tow rig
"You say it's rotted out, I say its weight reduction, better fuel economy  " |
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t3kg
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AzzA
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| Posted: Mon Jun 06, 2011 5:37 pm Post subject: |
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When you say "sticker", you mean metal label like in the photos above yeah?
Mine has one too. Thanks to this thread I've learnt what it means.
Cheers
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T3+4_Mike
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| Posted: Mon Jun 06, 2011 8:03 pm Post subject: |
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I'm sorry, It wasn't the 90 oktan sticker on mine, I had it confused with another car, I think my buddies 914. Mine has a sticker that says super/premium! wich would be 90 or higher though? None of my other cars have it.
http://www.thesamba.com/vw/forum/album_page.php?pic_id=814222
_________________
1 rusty low vin-ed 1967 squareback- very long restoration project
1973 412 4-door sedan, basket case to say the least
1967 fastback, rat rod build
1969 fastback,
1965 Notchback, The mother's summer car now! http://www.thesamba.com/vw/forum/viewtopic.php?t=477439
1986 Jetta Diesel 5spd, Was the beater, now currently undergoing an overhaul
1995 Chevrolet Caprice, The daily driver and tow rig
"You say it's rotted out, I say its weight reduction, better fuel economy " |
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t3kg
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t3kg
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Joerg Fischer
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| Posted: Thu Jun 09, 2011 6:44 am Post subject: |
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Hello from Germany,
since there were certain problems with the 1500S engines, later in the sixties VW replaced broken original 54hp 1500S engine always with the/a 52 hp-version.
Regards
Jörg |
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t3kg
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must50302
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t3kg
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