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#15
by
Kudagra
on 16 Mar, 2006 08:57
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Finally..thats what Ive been looking for for a long time. Thanks a bunch. Sorry for the interragtion but it seemed you knew what you were talking about.
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#16
by
fspGTD
on 16 Mar, 2006 11:28
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#17
by
Kudagra
on 16 Mar, 2006 15:41
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#18
by
myke_w
on 16 Mar, 2006 15:50
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As has been stated here and elsewhere, the dealer part number for later model (85, 86?) solid heads are the same part number, ie the na number supercedes the td one from earlier, which leads most people to conclude that the later heads are either all stronger and contain a different allow, or that they were really all the same as na anyway.
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#19
by
RabbitJockey
on 16 Mar, 2006 16:54
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my dad has a 12mm n/a head on his 85 turbo diesel jetta, and he's had no trouble with it, it's been dail driven for 2 years.
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#20
by
2mAn
on 21 Mar, 2006 02:58
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k no one has really answered my questions.....
can a NA block be built to handle a turbo? im used to gasser engines so im thinkin forged pistons and rods, and obviously an intercooler for the turbo setup.
ive heard of people turboing the NA motor and not pushing it much, but im talkin the full monty :lol:
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#21
by
Justin
on 21 Mar, 2006 07:48
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my na bottom end has seen 23 pounds of boost and held up fine so far, egt's have not been over 900 farenheight, so i would say the answer to your question is yes, use turbo rings in the na pistons and use the oil squirters like i have. and use a 12 mm headbolt block
later
Justin
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#22
by
myke_w
on 21 Mar, 2006 12:24
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Forged pistons and rods are overkill. You'd be hard pressed to rip up a stock bottom end with the kind of power you'll likely make. To run it hard, which it sounds like you plan to do, and to be reliable, you need oil squirters to cool the pistons, which means you need a td block, or to tap your existing block and install oil squirters. To use oil squirters, you need pistons clearenced (td stock or na modded.) The purpose of using an improved bottom end on a gasser is to lower compression. TD and D have the same compression, and same bottom end sans squirters, there's just more heat, which is addressed by the oil hitting the piston bottoms, carrying it away. Some have run na block turbo'd with some success, but to really flog it, spend the money, do it right, and go true TD. Your simplest solution is to go source a worn td, rebuild it stock with oversized pistons, and intercool it if you want more power. You'll have the same or less money in it, and it will be reliable.
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#23
by
2mAn
on 21 Mar, 2006 15:10
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thank you, that the answer i wanted, not what i was looking for but it answered my question... but now i have a few more....
its pretty hard to find a TD motor here in CA, so lets say i wanted to mod the NA block, i could have the oil squirters drilled in, then the easiest solution from there is to just buy a set of 1.9 TD pistons and rings. id also be intercooling the turbo setup, porting the head, a new cam maybe, is there anything else i should be looking at, like TD injectors
how would i know if my motor uses the 12mm headbolt? its from a 79 so i thnk its also a 1.5L, any way to check that?
would i need a pressure release valve like gas engines use?
where can i pick up a set of new oil squirters?
ive heard about TD cams, who makes em?
and im guessin the pistons are a dealer item only?
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#24
by
myke_w
on 21 Mar, 2006 15:50
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Make it easy on yourself, have a tired 1.6 td block shipped out to you (seller willing), a pallet shipping companie might charge you 150 for the freight.
On, 1.9's
1.9 pistons are all notched IIRC, and really expesive new, all 1.9 blocks also already have squirters.
I seem to sense that you are thinking bigger is better with displacement, but for the money the 1.6 is cheaper to build, repair, and way easier to find parts for in the us. It also makes similar power to the 1.9. Some would argue it's more reliable and has more potential longevity.
Pressure release? You mean blow off valve, the stock intakes have them built in and most people disable them.
Diesels can handle far more boost than gassers and are much more forgiving to haphazard tuning.
oilsquireter, find a 2.0 ABA code motor that blew up, or of course a 1.6 td or 1.9 na or td
Td cams?
No clue on that one.
1.6 td pistons can be found with rings for 350 a set anyday on the aftermarket.