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Engine Specific Info and Questions => IDI Engine => Topic started by: VWRacer on November 14, 2004, 08:37:47 pm

Title: Will a 1.6NA head work on a 1.6TD?
Post by: VWRacer on November 14, 2004, 08:37:47 pm

I spotted a good deal on a newly rebuilt 1.6NA diesel head and was wondering if it would work okay on my 1.6TD engine (cheaper than rebuilding my TD head)? Any issues? Cam? Sprocket?

TIA, Stan

Title: Will a 1.6NA head work on a 1.6TD?
Post by: VWRacer on November 14, 2004, 09:20:16 pm

Thanks that's exactly the kind of info I needed!

Destructive testing? I'm always up for that! :D

Title: Will a 1.6NA head work on a 1.6TD?
Post by: vwmike on November 14, 2004, 11:30:42 pm

I've been doing some research into this subject myself and my guess is yes it will work if the engine isn't pushed increadibly hard. Just keep an eye on your EGT's.  :D

Title: Will a 1.6NA head work on a 1.6TD?
Post by: fspGTD on November 15, 2004, 10:32:17 am

Regarding metallurgical differences in the head casting, valve seats, and pre-chamber inserts, it is not really conclusive that they are indeed different for comparing a late-style (IE: 12mm head bolt) 1.6lNA head vs 1.6lTD head.  For more info, see this thread:
http://www.vwdiesel.net/phpBB/viewtopic.php?t=357&highlight=1+6lna+differences+1+6ltd

Yes, there are some valves that are unquestionably different though.  I would say a 12mm 1.6lNA head would make a good rebuild candidate (change valves) for a 1.6lTD project.  If you run a 1.6lNA head as-is or used, I would recommend keeping EGTs a comfortable margin below the stock 1.6lTD limits because of the less heat resistant valves.

Title: Will a 1.6NA head work on a 1.6TD?
Post by: dieselpower on November 15, 2004, 05:08:21 pm

hey,
im using an N/A head on my TD running 18psi boost and LOTS of fuel. i dont have an egt gague that works so im not sure of my temps but im assuming its pretty high considering my oil temps sometimes.  its been on for a little over a year now but the boost and fueling mods have only been done in the last 2-3 months. i havent had a problem since i had it on but that doesnt mean there won't be one in the future. i wouldn't use it on an all out race car but just for driving i'd say you shouldn't have any problems.


Mark