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How much boost pressure can a 1990 Vw jetta diesel take
by
BradGarr
on 04 Nov, 2015 08:26
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Hello, I have a 1990 vw jetta diesel with no turbo on it I was thinking of putting one on I already found all the items I need I just don't want to blow my motor since I'm putting this kind of money in it. So how much psi can this engine take, 4 cylinder 8v 1.6L diesel
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#1
by
theman53
on 04 Nov, 2015 10:17
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20psi keep the egt below 1300f for decent life
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#2
by
Dakotakid
on 04 Nov, 2015 11:46
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Why don't you develop an interest in porting the head prior to talking boost?
You new guys are always trying to run a marathon on crutches.
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#3
by
libbydiesel
on 04 Nov, 2015 19:19
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If you think about it a little the answer is quite obvious. It's a darn sight less work and expense to install a manual boost controller and adjust the boost than it is to pull the head, disassemble it, port it, reassemble it, and reinstall it. 1/2 hour and $15 vs. 2 days and $100. There are also a slew of special tools needed for doing the head and a serious risk of screwing it up and being out a whole lot of money and time.
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#4
by
vanbcguy
on 07 Nov, 2015 22:15
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There isn't a set amount of boost pressure that is safe. It has much more to do with the type of intercooler you are using (I hope you aren't trying to put 15+ PSI in to the engine without one) and which turbo you are using.
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#5
by
One_punchmachinegun
on 08 Nov, 2015 16:38
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Funny thing is that I ran 21pounds in my 1Z swap no intercooler before I sold it. Nothing above 1600f@wot
Daily somewhere near 1200
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#6
by
One_punchmachinegun
on 08 Nov, 2015 16:41
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But was not the stock turbo, it was a K24
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#7
by
Dakotakid
on 09 Nov, 2015 23:59
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Well, that was what I was alluding to earlier. Turboing the bananas out of a tired engine is not the hot ticket. His original thought was that he did not want to injure the engine......probably a fairly clapped-out one at that. Because, along with boost, generally comes a desired increase in fuel.....and more heat and pressure......on worn rings in a worn bore with an old head gasket and stem seals.
I mean, spending time in the theoretical world is obviously nice for some folks........................I generally deal with reality.