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engine advice
by
Joey
on 13 May, 2012 22:12
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hello all. i recently bought a 81 rabbit 4 door to use as a daily driver. ive tried to repair the spun rod bearing by taking some emry cloth to the crank. it didnt work
still knockin. then pulled the head off and changed the rod due to it being a bit out of round. the cylinders have a nice big ridge at the top. threw it back together to drive it. well its time to build a new engine because now its burming oil.
because i live in california, there is not many of these vw diesels around. i have forund another 1.6 na but i want to go to turbo. i would also like to go to a 1.9td but its looking like getting one is going to be a pain.
so my question is:
can i convert the internals of a 1.6na to make it a td and is it possible to add the cooling nozzles to an n/a block?
also i read somewhere that it is possible to take a 1.8 gasser block and bore it, then use the 1.6na crank, and 1.9 pistons to make a 1.9td.
is it possible?
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#1
by
mystery3
on 13 May, 2012 22:35
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There are a lot of people running turbos on n/a internals. As long as you keep the boost at reasonable levels and an eye on your egt's you'll be fine.
I know nothing of boring gasser blocks to make 1.9td but it sounds dangerous.
How much power are you looking for?
What do your compression and leakdown tests look like? You may just want to do a refresh and slap a turbo on and call it a day?
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#2
by
JamesT
on 14 May, 2012 00:20
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The 1.8 has a larger bore than the 1.9 oddly enough. Even if you did use a 1.9 bore with a 1.6 crank, you'd end up with a 1.7. I would suggest finding the engine you want and paying what it's worth in to bring it into Cali. It'll probably be cheaper in the long run than machining a Frankenstein monster from parts available. I could crate you up and ship you down a motor, but I doubt it'll be cheap.
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#3
by
Joey
on 14 May, 2012 01:01
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well it seems the cheapest i can get a desent running 1.9 with a 100k miles is around $2k
as for the 1.8 thats why i asked, cant always believe the internet lol.
havent done a leakdown, but the gap between the piston and cylinder is about .030" maybe a bit more.
im looking for around 150 to 200hp does this sound reasonable?
i was also looking at the 1.9 head conversion since i need a head anyway, its cracked, in spec but still pressurizes the coolant.
and how reliable would it be if i were to turbo a n/a 1.6? i tend to have a lead foot.
JamesT how much would you want for a 1.9? what condition is it in?
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#4
by
mystery3
on 14 May, 2012 21:05
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150-200hp is high for an idi daily driver.
Afaik running a turbo on n/a internals is quite reliable if you keep the boost below 20psi or so and keep your egt's down but to get your power numbers, if you're serious about them, will require a big turbo, vnt or compound setup running a lot of boost.
Thought about m-tdi?
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#5
by
nathan_b
on 14 May, 2012 21:19
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I have a 1.6/1.9 head, with k24, aaz intake, intercooler and straight 2.25 dp/exhaust running 25psi, 1200egt max is darn near 140-150hp, it's spinning on the top of 3rd gear in my 81 caddy, 02a.
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#6
by
Joey
on 15 May, 2012 00:14
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nathan_b is your 1.6 an n/a or td internals?
ive never heard of a m-tdi? i will research it
so around a 100hp is doable, i could live with that, it scoots pretty good for a worn out n/a, i would guess its probly around 50hp at the moment.
how hard would it be to add the oil squirters to the n/a block? other than valves, pistons, and the oil squirters, is there any other internal differences? from what i can find, the crank and rods seem to be the same.
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#7
by
billybobf
on 15 May, 2012 00:25
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Id love to see 120 ish for my toyota, lol
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#8
by
Joey
on 15 May, 2012 00:48
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i looked into it an m-tdi would be awesome, maybe one day, right now i dont need the headache, plus the cheapest i can find a tdi around here is $2800 for a used runner.
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#9
by
nathan_b
on 15 May, 2012 06:02
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kb pistons, stock td block.
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#10
by
R.O.R-2.0
on 15 May, 2012 11:27
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Id love to see 120 ish for my toyota, lol
they came stock with 150hp V6 engines..
but the quality was hit n miss..
most toyota V6s ive seen were neglected, and blew head gaskets left and right..
ive got almost 100k miles on my replaced head gaskets, and it hasnt hiccuped once..
i LOVE my 3VZ-E... i really wish i could get my hands on one of the IRONMAN Ivan Stewart's 900+hp 3.0L toyota V6 desert racer engines!
ive ALMOST got my buddy talked into swapping a TDI into his 88 toyota pickup..
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#11
by
bajacalal
on 15 May, 2012 11:54
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most toyota V6s ive seen were neglected, and blew head gaskets left and right..
ive got almost 100k miles on my replaced head gaskets, and it hasnt hiccuped once..
i LOVE my 3VZ-E... i really wish i could get my hands on one of the IRONMAN Ivan Stewart's 900+hp 3.0L toyota V6 desert racer engines!
You must be doing something right. I thought these (3.0 V6) were like Humpty Dumpty of engines. Once the head gasket goes, it's broken and there's nothing you can do to put it back together again.
nathan_b is your 1.6 an n/a or td internals?
ive never heard of a m-tdi? i will research it
so around a 100hp is doable, i could live with that, it scoots pretty good for a worn out n/a, i would guess its probly around 50hp at the moment.
how hard would it be to add the oil squirters to the n/a block? other than valves, pistons, and the oil squirters, is there any other internal differences? from what i can find, the crank and rods seem to be the same.
To answer your questions, first realize that there were 1.6 INTERCOOLED TDs that came with like 80 horsepower. To push 100 hp on these IMO is at the top of the range for what the regular Joe can do with one of these. Open up the intake, and especially the exhaust and you will see a lot of HP gains. Add a turbo, intercooler and well designed piping and I think you can be around 100 hp. These are light cars but even with that you will still be slower than a lot of
stock sporty cars on the road, keep that in mind. But you will have a car that is reasonably fun to drive and is still more economical than most cars on the road today, even with all the "advancements" in technology over the past 30 years.
The oil squirters do not simply bolt into a n/a block to make it a TD block. Machining is required... If you're in the market for a new engine and want to upgrade I recommend a real TD block, they're rare but they do exist. Check craigslist, this place, the vortex relentlessly. If you are patient and are willing to travel a few hours to get one, I think you will find one eventually. They came in Jettas only, at least around here. The cheapest way to get one might be someone selling a car, especially if it's not running, beat to hell, not registered, no title, wife wants it gone, or something like that. I've seen them pop up from time to time. People dealing in the engines tend to know that they're rare and ask a lot for them.
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#12
by
nathan_b
on 15 May, 2012 13:21
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I'll post a video tonight and you can tell me I am if you think it is only 100hp. stock pump and bottom end, stock aaz head. k24, intercooled. my caddy blows a 16v mk1 out of the water. and a 16v is much more than 100hp. even a 1.8.
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#13
by
R.O.R-2.0
on 15 May, 2012 16:27
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I'll post a video tonight and you can tell me I am if you think it is only 100hp. stock pump and bottom end, stock aaz head. k24, intercooled. my caddy blows a 16v mk1 out of the water. and a 16v is much more than 100hp. even a 1.8.
turned up pump and a K24 will make more than stock 16v power..
mine SCOOTED, and it was a full on 1.6, no AAZ head..
definitely more than 100hp.
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#14
by
theman53
on 15 May, 2012 16:35
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After intercooling, mine was fast.
Giles pump should net you over 100hp in a TD no other mods done.