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Engine Specific Info and Questions => IDI Engine => Topic started by: MaxHedrm on February 02, 2008, 04:01:34 pm

Title: TD vs NA crank?
Post by: 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.
Title: TD vs NA crank?
Post by: MJF on February 02, 2008, 04:22:11 pm
It is same.
Title: TD vs NA crank?
Post by: CoolAirVw 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????
Title: TD vs NA crank?
Post by: RabbitJockey on February 02, 2008, 05:49:13 pm
my money is on it lasting just fine
Title: TD vs NA crank?
Post by: jtanguay 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:
Title: TD vs NA crank?
Post by: 935racer 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.
Title: TD vs NA crank?
Post by: jtanguay 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:
Title: TD vs NA crank?
Post by: 935racer 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).

(http://i94.photobucket.com/albums/l83/935racer/PICT2253.jpg)

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 8)
Title: TD vs NA crank?
Post by: jtanguay on February 02, 2008, 08:20:55 pm
how are you controlling the wastegate? is it just disconnected or are you running a controller?
Title: TD vs NA crank?
Post by: 935racer 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
Title: TD vs NA crank?
Post by: 935racer 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:
Title: TD vs NA crank?
Post by: MJF 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 8) I like the old style crank front end better...
Title: TD vs NA crank?
Post by: MaxHedrm on February 03, 2008, 11:19:05 am
Quote from: "MJF"
Actually there is early 1.6NA crank in my engine 8) 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.  :)