engine code's ? - General - VWDiesel.net The IDI, TDI, and mTDI source.

engine code's ? by blkboostedtruck on 30 Sep, 2007 20:22
what engine codes defines a tru turbo diesel block ? is there any way i can find a link or something that i can use as a quick refrence? example what is engine code CY ? also what can i use to compare TD to a GTD engine specs?
thanks Duane
#1 by jtanguay on 01 Oct, 2007 04:55
iirc CY was discussed some time ago, and found to be a genuine TD block. i'm not 100% sure on this, but i remember it being in a rabbit for sale on ebay.
#2 by Mark(The Miser)UK on 01 Oct, 2007 08:13
I don't believe that the GTD block is any different to the hydraulic CY block.

Here in Limeyland CY went from 82 to 88 in the Quantum covering shimmed and hydraulic and beyond into the MK3 Passat/Audi [80]/4000 . We never had the MF block which USA had as hydraulic. GTD were RA and SB codes....
#3 by blkboostedtruck on 01 Oct, 2007 15:21
that helps! but i still want to find out what the difference between a TD and a GTD? and what was done by VW to squeze 80 HP out of a engine that looks like it should have 68HP? this is just a learning curve for me! what is the secret? L.O.L.
thanks Duane
the CY i have came from an 84 jetta that was marked turbo from the factory but it is a mechanical block! the MF must of been the hydrolic block?
#4 by Mark(The Miser)UK on 01 Oct, 2007 16:48
MF came out in '95 ish. The GTD basically had an intercooler added to cool the intake air thus you get more cooler denser oxygen therefore everything can then be tweeked up [extra fuelwise] Bigger injectors and possibly different enrichment device on aneroid diaphragm.

No reason at all why you can't get 80HP out of the CY block and 90HP out of an intercooled GTD etc etc.

The caveats are extra power tends to cause extra heat; so best to monitor with thermocouple.
Possibly shimmed head can be revved higher than hydraulic head...
#5 by BlackTieTD on 01 Oct, 2007 17:04
Quote from: "Mark(The Miser)UK"
MF came out in '95 ish.

i bet that's a typo. over here i think MF was issued around 1985. its the AAZ 1.9L TD that was in 1993. the MF in my driver is from a '90. i think MFs came hydraulic and solid lifter. good on VW for no code change :lol:
#6 by Mark(The Miser)UK on 01 Oct, 2007 17:33
Quote from: "BlackTieTD"
Quote from: "Mark(The Miser)UK"
MF came out in '95 ish.

i bet that's a typo. over here i think MF was issued around 1985. its the AAZ 1.9L TD that was in 1993. the MF in my driver is from a '90. i think MFs came hydraulic and solid lifter. good on VW for no code change :lol:

Ha ha I think my keyboard must have dropped a segment like an old calculator so 8 became 9. :oops:
#7 by blkboostedtruck on 01 Oct, 2007 18:25
Ahhh thanks guys! it's clear to me now! so should i hang on to this CY engine for a good spare? one more curious question what turbo was used on the GTD? K14 that everyone is after or something else or did they use the K24 as well?
thanks Duane