IDI engines: fuel economy comparison

[QuickTD]

Just got back from a trip to Montreal. Got 825km on 49.3L, or 5.97L/100km . Works out to 47.31mpg (imp) or 39.39mpg (US). This was combined high speed (130km/h) highway and some Montreal city driving (which differs somewhat from "normal" city driving    ). I was also hauling about 400-500lbs of tools and parts with me...

Car is '97 1.9TD jetta, intercooled, injection pump mods, exhaust and a bit more boost than stock.

[laser030]

1989 VW Jetta NA Diesel (STOCK!!!!)
487.5 Miles on 8.756 Gallons Just Filled Up at 11:45pm

Calculates to 55.7 MPG (US)
Don't know what that is in L/Km, but I don't really care.

[moosiah]

Hi all       the frankenbunny gets a very consistant 47 mpg commuting from sonoma  valley to treasure island in the sf bay........ with a fn trany from a picup. on freeway trips it gets over 50..... my ford 1ton van (6.9D) gets 17 on a good  day of driving at 55mph ( no overdrive, yet)  :shock:

[VWRacer]

Hey moosiah!

We're almost neighbors...I live up in Sonoma County near Lake Berryessa, and work at Travis AFB.

BTW, what is the "frankenbunny"?

Stan

[BlackTieTD]

some good numbers and interesting cars out there. thanks for the replies. i'll add your info to the top post, add any extra info about your car that you'd like so i can include it all. weight, motor, tank capacity etc etc...

 

[fspGTD]

My Rabbit's 1.6lTD is engine code CY not MF.  (Not that I understand there to be one difference compared to a solid lifter MF!   )  Oh yeah also although the weight of the car sans-driver, race-ready is 1800 lbs, the weight of the car with race gear loaded in the back plus myself is actually more along the lines of 2100lbs.  Some modification details that might be relevant for mpg calculations are: it is lowered some and has a US-style GTI airdam, but has tall and high-treadwear rated 175/80/13 tires ...or was that 185/70/13... 10mm wider same aspect ratio as stock circumference tires I know for sure.  I use them for roadtrip driving, 2.5" exhaust with freeflow downpipe, and for gearing, it has a 4K with .71 fifth gear conversion (that has a 3.94 Ring&Pinion.)

[deepmud]

1.9td with "mods" - it's turned longitudinal, has 1 7/8"  straight pipe ( 4 90 degreee mandrel bends)  pushing a little red brick 65mph@2750 rpm on 35" tall tires, gets 27 mpg. It's workin' hard. I wouldn't mind 30 mpg, we'll see what the intercooler does.

[type53b_gtd]

engine - MF code 1.6TD hydraulic lifter
transmission - 7A code 4+E 3.94 final, .71 fifth gear
mods - exhaust, increased fuel, KKK03 turbo, intercooler
chassis - 84 Scirocco ~2300lbs
fuel tank - stock 53L

Under daily driving (one way commute ~100km) I typically average 5L/100km, or 56.6 mpg Imperial, 47.2 mpg US, with moderate to heavy use of the left foot.  Complete disregard for the visbility of motorists behind me results in 5.6 - 5.8 L/100km consumption overall.

The use of stanadyne performance formula usually knocks fuel consumption down noticeably, and I have recorded 4.6L/100km on long freeway hauls of constant 125km/hr speed.

The lower CD of the Mk2 Scirocco (.38 over .42 on the A1 Golf) and the economy gearbox make this combination a very economical commuter.

[Blades]

nndra ?

[type53b_gtd]

Indeed, it is I...

Sorry - couldn't remember what userid I had on the old forum - too much soot in the brain I guess...

[fspGTD]

Hey good to hear you're still breathing!  Welcome to the new forum!

BTW - type b53 - is that what they called the scirocco?  (I'm pretty sure the technical name for the Golf 1 / Rabbit is the "type 17"   )

[type53b_gtd]

Hey good to hear you're still breathing!  Welcome to the new forum!

Thanks Jake.  I was searching for something and tripped over it, thought I'd drop in.  Looks like a nice new home for the forum.

BTW - type b53 - is that what they called the scirocco?  (I'm pretty sure the technical name for the Golf 1 / Rabbit is the "type 17"   )

Type 53 is indeed the Scirocco chassis.  Type 53=Mk1, 53B=mk2, and 535=Corrado.

Drew

[BlackTieTD]

Type 53 is indeed the Scirocco chassis.  Type 53=Mk1, 53B=mk2, and 535=Corrado.

yay! i have at least one of all of those  :?  :lol: (don't ask why)

nice to 'see' you drew.  

[farkman]

Hey guys

This is my first post and I would like to say hello. My name is Peter and I live in Mississauga. I own a silver 1994 Golf TD. All I have on it is a K&N filter (which is nothing really  :lol: ). I am about to start making an exhaust system from the turbo back out of .065 316L stainless steel. It will be TIG welded (I have a passion for welding) but I still have to get some SS plate for the flanges.

Anyways, best tank 45.1 US mpg, worst tank 33.8mpg, average since I bought the car (August 2003) 38mpg.

[GTD0023]

HEY GUYS,
i'm new to the forum, but not new to vw gtd.
I have a 89' Golf GTD 2 doors that runs 6.6L/100km.
I just did some pump mods, closed wastegate and bov.
now it feels as fast as my G60 golf I had, but i don't think its faster!  :?
You think i can get better fuel economy with a bigger exhaust, and how big?