Author Topic: TD vs NA crank? (Read 3433 times)

MaxHedrm · « **on:** February 02, 2008, 04:01:34 pm »

I'm considering a TD block & head listed over in the classifieds, but have a question...

Is the TD crank the same as the NA crank? I know where I can get new pistons for it, but have no idea on the crank, so I am wondering if reusing mine would be doable.

MJF · « **Reply #1 on:** February 02, 2008, 04:22:11 pm »

It is same.

CoolAirVw · « **Reply #2 on:** February 02, 2008, 05:33:46 pm »

Below is cut and pasted from the white paper, cut from the section specifically for turbo diesels. I seem to remember something about Ion-nitriding also?

??

Quote from: ""

A number of changes were made to the crankshaft. The front end of the crankshaft was reinforced. The highly loaded crank-pin, at cylinder 4, has its radius induction hardened and the oil hole ground while radii at the other pins are roll-hardened.

But.... the non-turbo crank will fit. The question is will it last as well?

RabbitJockey · « **Reply #3 on:** February 02, 2008, 05:49:13 pm »

my money is on it lasting just fine

jtanguay · « **Reply #4 on:** February 02, 2008, 06:52:38 pm »

i'm suspecting that if its a hydraulic engine that it MIGHT have the turbo spec crankshaft. they really over-engineered the crankshaft for the turbo. it can withstand more than double, or even triple (as MJF has produced 200+ hp :shock: with one)

you're not looking for 160 hp are you? :lol: should be fine. just get the crank polished before you re-install it :wink:

935racer · « **Reply #5 on:** February 02, 2008, 08:02:42 pm »

Quote from: "jtanguay"

i'm suspecting that if its a hydraulic engine that it MIGHT have the turbo spec crankshaft. they really over-engineered the crankshaft for the turbo. it can withstand more than double, or even triple (as MJF has produced 200+ hp :shock: with one)

you're not looking for 160 hp are you? :lol: should be fine. just get the crank polished before you re-install it :wink:

Yeah my 1.6 dynod 193.5whp with the td crank today, should have made more but my wastegate was opening too much, should have a 200+ dyno next week.

jtanguay · « **Reply #6 on:** February 02, 2008, 08:11:31 pm »

Quote from: "935racer"

Quote from: "jtanguay"
i'm suspecting that if its a hydraulic engine that it MIGHT have the turbo spec crankshaft. they really over-engineered the crankshaft for the turbo. it can withstand more than double, or even triple (as MJF has produced 200+ hp :shock: with one)

you're not looking for 160 hp are you? :lol: should be fine. just get the crank polished before you re-install it :wink:

Yeah my 1.6 dynod 193.5whp with the td crank today, should have made more but my wastegate was opening too much, should have a 200+ dyno next week.

on a 1.6??? SWEET!!!! would be cool if you sold a whole 1.6 stage 5 kit including Giles pump... 200 whp :evil: (including your ported head, manifolds, dp, and anything else one might need...? i would almost like to try that on a bone stock 1.6TD (except maybe with the ported head) to see how long it lasted :lol:

if a 1.6TD rated at around 68hp can make 200 hp, then a TDI rated at 90 using the same ratio be able to make around 260 hp, but the torque would be insane! :twisted:

935racer · « **Reply #7 on:** February 02, 2008, 08:18:21 pm »

Yeah on my 1.6/1.9 head combo, I've been driving it hard for the last month or so, no issue, runs great. I am a bit disapointed to be honest, the only time I had this wastegate issue was on the dyno today, I hit 28-29 psi when my wastegate open and a second later it drops down to 22 psi, tried it on the road after the dyno run and no problem holding 28 psi all the way to 180km/h in 4th gear with the current 4s tranny (5800rpm).

For some reason I clicked time on the printout instead of rpm for the bottom of the graph, I'll fix that on monday back at the shop, did I mention the new shop has a dyno

jtanguay · « **Reply #8 on:** February 02, 2008, 08:20:55 pm »

how are you controlling the wastegate? is it just disconnected or are you running a controller?

935racer · « **Reply #9 on:** February 02, 2008, 08:22:22 pm »

You can see where my torque and HP are doing great and are fairly flat and than they drop quite a bit, that is when my boost dropped big time from my wastegate issue, where it completely stops is when I let off the throttle at 6k rpm

935racer · « **Reply #10 on:** February 02, 2008, 08:23:40 pm »

I am using a manual boost controller, I am going to get a good electronic boost controller like an apexi and do a few other things and try for 210 on this setup, after that its time for new manifolds, different turbo, bigger pump and 240whp :twisted:

MJF · « **Reply #11 on:** February 03, 2008, 12:43:49 am »

Quote from: "jtanguay"

i'm suspecting that if its a hydraulic engine that it MIGHT have the turbo spec crankshaft. they really over-engineered the crankshaft for the turbo. it can withstand more than double, or even triple (as MJF has produced 200+ hp :shock: with one)

Actually there is early 1.6NA crank in my engine

I like the old style crank front end better...

MaxHedrm · « **Reply #12 on:** February 03, 2008, 11:19:05 am »

Quote from: "MJF"

Actually there is early 1.6NA crank in my engine I like the old style crank front end better...

So since I'm not planning to go anywhere near 200hp, I should have nothing to worry about. Good to know.