Board logo

1.9TDI VW (VAG) engine in an MK Indy?
wydraz - 24/11/08 at 07:49 PM

Hi guys,

Your thoughts on this? Would the VAG 1.9TDI 170bhp diesel be a good choice in an MK Indy?

I have a Skoda Fabia vRS as my everyday car with the 130bhp version and it really shifts!

Thanks,

Dan

[Edited on 24/11/08 by wydraz]


Mark G - 24/11/08 at 07:52 PM

Diesel's tend to be really torquey which makes them go well in a tintop. An Indy weighs much less and needs less torque but more power. I'd guess that you'd have trouble getting the power down without wheel spinning as there's not much weight over the driven wheels. Also, as soon as you do get some power you'd be changing gear pretty soon after anyway.

I'm sure it'd be quick but petrol power seems to be the way to go for a performance kit car.


Simon - 24/11/08 at 07:56 PM

It might be a bit noisy and you'd really need a rear exit exhaust for that reason, but if you don't mind that then I reckon go for it

Getting a nice low ratio final drive will be the key to a sensible driving experience and reduce the effective torque at the rear wheels.

I'd be tempted to chuck a diesel in mine

Keep us posted!

ATB

Simon


speedyxjs - 24/11/08 at 08:02 PM

I cant remember who it is but someone on here has made a rear exit exhaust for his car. Looks pretty good too


mookaloid - 24/11/08 at 08:03 PM

Better off with the 265bhp petrol turbo...


Shilvers - 24/11/08 at 08:15 PM

Aren't oil burners supposed to be a bit heavier then their petrol counterparts?

Might need to spend a view quid on the handling and even then I dunno what it would be like. Anyone know what they weigh in at?


Shilvers - 24/11/08 at 08:19 PM

http://www.haywood-sullivan.com/vanagon/TDI/tdi_specs_en.pdf

135kg dry


hobbsy - 24/11/08 at 08:33 PM

A bloke called Crispin ??? in Practical Performance Car was building one up that he won in a competition ran by the mag. Not been many updates recently.

I think he was supposed to do it inside a year but I think its been longer than that.

Had problems etc. Sounds like a typical build!


nick205 - 24/11/08 at 08:34 PM

VAG 1.9 TDIs were 130 and 150bhp (had the 150bhp Leon cracking car all round). Tuneable for more though.

VAG 2.0 TDIs are 140 and 170bhp also tuneable for more if required.

As above, IMHO turbo diesel engine characteristics are not suited to 7's, but ideal for tintops and everyday motoring.


coozer - 24/11/08 at 08:37 PM

I reckon if you can get suitable gearing, ie 3.14 diff, low ratio gearbox the torque will make a 7 fly.

You know what it feels like in your tintop so imagine it in a lightweight car with the gearing to match.


dinosaurjuice - 24/11/08 at 08:37 PM

my kitcars a diesel...

ford 2.0 tdci 136bhp completely standard.

fairly quiet and very little exhaust noise - vgt turbo takes a lot of the noise away.

my only advice would be to go the mid engine route and make use of the original gearbox. i struggled to find a rwd gearbox that was cheap and could take the torque and have descent ratios. also keeps the back end heavy to make use of the massive torque!

the 1.9 vag units are easier to wire up than the ford/peugeut tdci/hdi units but not quite as refined and quiet. however, having wired up mine, i would probably use a vag next time.

MY DERV BEAST

ATB

Will


daviep - 24/11/08 at 08:41 PM

quote:
Originally posted by Mark G
Diesel's tend to be really torquey which makes them go well in a tintop. An Indy weighs much less and needs less torque but more power.



Smells like verbal diahorrea to me!!!!!!!!!!

Torque is a variable factor in the equation for working out horsepower (2Pi X N x T)/33000 where N is the number of revs and T is torque.

An increase in horsepower can only be accomplished by increasing torque or increasing the revs at which at which the torque is developed.

You would also want a high ratio axle

Cheers
Davie

motto: back to basics


turboben - 24/11/08 at 09:16 PM

Can't help but think a petrol turbo would be better at everything apart from economy. I dont care about mpg in my kit car!


adam1985 - 24/11/08 at 09:35 PM

even in tintops diesils are good but they just dont compare to a petrosl in performance so why would you bother with one in a kit car when that is the main idea of one


Simon - 24/11/08 at 11:30 PM

quote:
Originally posted by daviep
You would also want a high ratio axle

Cheers
Davie

motto: back to basics



No, like I said, a low ratio. I have a 2.28:1 (from a BMW 330 DIESEL) which I'll be putting in mine which is a low ratio, to replace the 3.92 (high ratio) from PETROL Sierra

ATB

Simon


it_cud - 17/12/08 at 06:34 PM

Well done dinosaurjuice,why don't we see more diesel motors ? I'm Just about to swap a screaming 8v VX motor for a 1.7 TD Isuzu in my Westfield. Engine choice was governed by two factors. Firstly, It mates straight onto my Manta box, handy eh ? an secondly it's purely mechanical. Basically a wire to the fuel shut off and that's it ! How did you find sorting out the Ford wiring ? Really fancy a performance motor in mine,but I'll see how this goes first.


dinosaurjuice - 18/12/08 at 08:18 PM

The wiring for mine was hurrendous. im fairly competant with electrics and electronics but i still struggled.

I didnt build my rocket to be outrageously fast, i wanted it to be a complete hoot to drive. and it is!!

the 1.7 isuzu is a strong lump. keep us posted with how it turns out.

ATB will


it_cud - 20/12/08 at 01:39 AM

Hi, I surely will do. I realise my choice of motor won't come close to the performance of a modern ' performance ' Diesel, but got to be worth a try ? Keep your wiring notes, I may need them at some point.
Mike.