Club 80-90 Forums

ninja.turtle007 wrote:
As before I don't want to get to anal about this,

everybody loves the chance to get anal

lloydy wrote:

ninja.turtle007 wrote:
As before I don't want to get to anal about this,

everybody loves the chance to get anal

Been there, done that, not again, thank you!

Mines an eTdi Al. But as has been noted there are a lot of variables that come into play. I have Vagcom Jed and wish i could make sense of a lot of the data it dishes up! I find it dead handy for error codes; but i would have to sit down and research a lot of the stuff on their to make sense of it or even its significance! That or get a master class off someone in the know.

I know I seem to have lost about 2-3 mpg in the last year by dropping just under an inch on tyre diameter.

Last time I went to Croatia i was getting 28mpg, the best I have ever seen in this van and that was on the old tyres with a 30.48 inch diameter. I am now on tyres with a 29.53 inch diameter, smaller rolling radius and getting 25.2mpg.

Forgive my ignorance on diesel pumps and clicks but is'nt the click off actuated by back pressure which is governed more by the pump delivery pressure than anything van connected? That was my view unless im missing something and on that basis I was always of the view that different pumps would click off at random instances?

I use Road Trip on the iphone and it gives you the option to confirm whether your fuel filled the tank or not. If you say not it continues averaging until you brim and say so. Even a few litres more or less can skew the mpg quite dramatically.

interesting fact on the tyre issue mark, rich found the opposite. he was getting 34ish with the short box and now he`s getting about 30.

i was getting 30 but last trip i did i got nearly 70mpg.

Mudlark wrote:Mines an eTdi Al. But as has been noted there are a lot of variables that come into play. I have Vagcom Jed and wish i could make sense of a lot of the data it dishes up! I find it dead handy for error codes; but i would have to sit down and research a lot of the stuff on their to make sense of it or even its significance! That or get a master class off someone in the know.

I know I seem to have lost about 2-3 mpg in the last year by dropping just under an inch on tyre diameter.

Last time I went to Croatia i was getting 28mpg, the best I have ever seen in this van and that was on the old tyres with a 30.48 inch diameter. I am now on tyres with a 29.53 inch diameter, smaller rolling radius and getting 25.2mpg.
.

Have you ever had the injectors serviced or cleaned Mark?

Have you ever had the injectors serviced or cleaned Mark?

Not in the time the vans been with me Jake. But Stewart never said he had anything better than 28mpg when he had the van so took that as the benchmark.

Never given it much effort to be honest but with fuel prices now double what they were when I got the van it's worth pursuing.

Do you think injectors could make a big difference?

Mudlark wrote:

Do you think injectors could make a big difference?

I will tell you when I have mine back in and running! But certainly from reading into it and a good chat with my local diesel specialist says it makes a big difference, as any reduction the spray pattern greatly reduces efficiency. My injectors had only done 70k ish and one was bad.

The other (cheaper) option is to run this through:

http://www.amazon.com/Lubro-Moly-Diesel ... B002PEGAJ4

Then change the oil afterwards. Although a proper pressure test / sonic cleaning is better by all accounts..

Mudlark wrote:

Last time I went to Croatia i was getting 28mpg, the best I have ever seen in this van and that was on the old tyres with a 30.48 inch diameter. I am now on tyres with a 29.53 inch diameter, smaller rolling radius and getting 25.2mpg.

Smaller tyres @ same speed = more revs = more fuel used .....

Mudlark wrote: Forgive my ignorance on diesel pumps and clicks but is'nt the click off actuated by back pressure which is governed more by the pump delivery pressure than anything van connected? That was my view unless im missing something and on that basis I was always of the view that different pumps would click off at random instances?

Using a 'click' as a benchmark isnt accurate because it can be induced by to many variables

toomanytoys wrote:Mmm.. I'd expect to be into a box refresh and re-gear soon after... Sorry....

After I dismissed this earlier in the thread you are pretty close. I want a slightly longer 4th and it needs a rebuild. Although the rebuild isn't due to the TDI.

I sent the box to Aidan for oiling plates and a check over as the crown and pinion that I have is very rare. Unfortunately whilst I have been using the van the pinion bearing lockring has undone and allowed pinion head to move causing major damage to pinion head and g gear and rg synchro inner hub.

Although I have located the correct crown and pinion I am also contemplating changing from 4.57 to 4.83 due to the huge cost of the original parts. This would mean a longer 3rd and 4th and a front diff rebuild with correct C&P. This would still bring costs in a bit lower than using a 7/32 C&P.

What is a huge cost ??

C&P 4.86 second hand = £200
C&P 4.57 second hand =

ouch! must be pricey if you can fit the longer gears and different c&p and still come under the price of a replacement!

ninja.turtle007 wrote:C&P 4.86 second hand = £200
C&P 4.57 second hand =

£200 .... em that aint expensive ..!! Have you seen Jager's site

i`d have thought the 4.57 cwp would be a bit long on 1st and g with big tyres anyway tom.

Don't know if the FD ratio thing means a hole lot when pushing a brick at anything over 40mph
I think that as long as your egt aren't creeping up, you are burning all your fuel, and your economy
Is largely due to combined resistance factors.
I' running 6/37 final drive, longest 4th and intermediate 3rd with MTDI
Out of a brimmed tank i get 640km fairly hard driving
For the sake of comparison I put a tank through driving like a Vicars Wife
And EGT not exceeding 450 degrees C
Fuel returned 730km
The funey thin was that no one was aggravated by my driving style
Apart from passengers who knew just how slow I was driving.
I think that works out to about 28.5mpg for my average
And 32.5 when pratting about( please check my calls based on 63.5ltr)