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Engine Specific Info and Questions => IDI Engine => Topic started by: jwspin on February 27, 2006, 09:04:04 am

Title: N/A head Vs TD
Post by: jwspin on February 27, 2006, 09:04:04 am

whats the difference between the NA and the TD heads?

-jared

Title: N/A head Vs TD
Post by: veeman on February 27, 2006, 09:12:41 am

At least in the 1.6 TD heads, I understand that the valves are different (sodium filled valves for the TD) and that the head casting itself is reportedly made of a different alloy.  

I believe there was some speculation a while back whether any of the special alloy remains now that some remanufacturers use the same castings for both apps.

You might check the archives here though... Others have documented this.

Title: N/A head Vs TD
Post by: HP on February 27, 2006, 09:35:05 am

Some say 1.6TD heads are made of aluminium, others say stainless steel...  :roll:  I don't know..

Title: N/A head Vs TD
Post by: jwspin on February 27, 2006, 09:52:02 am

could i use a na head on a beater TD motor? its an eco motor and i would just like to get it running.

-jared

Title: N/A head Vs TD
Post by: fspGTD on February 27, 2006, 11:22:08 am

Before posting questions, please use the search feature of the forum to see if it has been covered before.

The following thread is relevant:
http://www.vwdiesel.net/phpBB/viewtopic.php?t=357

Title: N/A head Vs TD
Post by: jwspin on February 28, 2006, 06:59:42 am

searched a few times and couldnt find that thread
thanx
-jared

Title: N/A head Vs TD
Post by: hillfolk'r on February 28, 2006, 04:19:53 pm

it probably be ok,,,just go solid to solid,,or hyd to hyd. lifters,,,,i do know td prechambers are bigger than na,,,,i had a junk  td head, ,,valves werent sodium,,,and it was an 86jetta td ,removed an exh valve cut it,,threw it inwater,,no reaction,,not sodium filled,,,,,,that was a deal though,,, inj.pump/head complete with manifolds+turbo,,,,camwas wasted/broken,,,just tookhead off cause it was easier inyard,,theydidnt charge a core charge,,,yea imstillrunnin that turbo,,,,,,,,,got all those goodies for 125,,theydidnt know what theyhad,,,,,,,,,,,,,