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#30
by
R.O.R-2.0
on 29 Jun, 2011 20:33
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the thing is yeah it melts at 1200 or w/e but at what point does it warp or expand too much
the pistons expand and seize before they melt..
pure aluminum melts at, or around 1344* F
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#31
by
vdubspeed
on 30 Jun, 2011 10:10
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just to throw MORE gas in the fire...this car DOES NOT have extra oil capacity, an oil cooler, oil squirters, sodlium filled valves, etc.
The ONLY thing I did was increase the oil pressure with a TD pump. (again...thanks Libby)
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#32
by
R.O.R-2.0
on 30 Jun, 2011 10:20
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just to throw MORE gas in the fire...this car DOES NOT have extra oil capacity, an oil cooler, oil squirters, sodlium filled valves, etc.
The ONLY thing I did was increase the oil pressure with a TD pump. (again...thanks Libby)
i am running a USED TD oil pump and pan in my build. the rest is a stock CS code vanagon engine.. stock pump, head, pistons, everything..
with a VNT15, millennia intercooler, and a cranked up n/a pump..
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#33
by
vdubspeed
on 08 Jul, 2011 12:29
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Well holy crap...5psi. Yup...5 psi is all she has.
Finally got around to tossing in a gauge today and the best it did was 5 but MAYBE 6. Either way...nothing.
I'll be ordering a Hallman MBC like all my other turbo cars to crank this biotch up
So I've already pushing the limit on EGTs...what's the "vwdiesel.net"-sacred-you-will-die-if-you-go-over limit. I'll make sure to go 5 psi over that
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#34
by
R.O.R-2.0
on 08 Jul, 2011 12:42
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Well holy crap...5psi. Yup...5 psi is all she has.
Finally got around to tossing in a gauge today and the best it did was 5 but MAYBE 6. Either way...nothing.
I'll be ordering a Hallman MBC like all my other turbo cars to crank this biotch up
So I've already pushing the limit on EGTs...what's the "vwdiesel.net"-sacred-you-will-die-if-you-go-over limit. I'll make sure to go 5 psi over that
ive already supplied ~40 psi to a stock 1.5D.. it blew up shortly after the gauge rocketed past 35 psi.. 7 cracked/broken head bolt bosses.
and i basically burnt one down too.. 1.6D pushing 25 psi for about 4 minutes straight, up a hill, floored.. top of the hill i lost power and the engine locked.. dunno how hot it was, i would guess it was over 1500* tho..
the 1.6 still runs to this day, and the 1.5 ran when i took it out, it just took 5 gallons of coolant to go 2.5 miles..
the stock head gasket/bolts are good for ~20 psi all day long.. your EGTs are going to plummet when you crank up the boost..
you got a K03 right? might want to limit your boost to about 15 psi, so it doesnt kill your turbo.. those little turbos get really inefficient really fast once they get past 15 psi..
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#35
by
vdubspeed
on 08 Jul, 2011 14:02
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cool...I'll start off at 15psi.
The turbo is stock from a 98 Jetta TDI.
Looks like this:
So when you say the 1.6 locked up but still runs...did it soft seize, break free, and you're still using it?
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#36
by
R.O.R-2.0
on 08 Jul, 2011 16:05
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it seized up.. if i wouldnt have thrown the clutch in, it would have been skidding the tires..
idk how soft that is..
yes, i just drove the car yesterday. runs beautifully.
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#37
by
vdubspeed
on 08 Jul, 2011 17:19
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well by soft seize I mean that it seized but freed up.
Or did you have to overbore for new pistons?
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#38
by
R.O.R-2.0
on 08 Jul, 2011 20:59
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no, all ive done since the incident, is intercool it, and change the oil..
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#39
by
RadoTD
on 08 Jul, 2011 23:20
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Wow, I didn't realize that engine you seized still lives! That makes me less worried about running high egt's. I figured running too high would turn that engine into scrap, but I suppose my chances would be high to keep running it until I can get a TDI long block replacement dropped in!
And Libby, I have the same Auber gauge and it reacts impressively fast. You can't really tell by how quickly the temp rises as you don't know how fast your EGT's are truly rising, but the real thing is how quickly the temp drops. You can see in his video going from 1300-800 in about a second. Even if the true temp was say 500deg (it would definitely be higher at that point), the probe still dropped a significant temp in a fairly short time, while still surrounded by hot air.
I wish I had taken a video of it, but I tested how quick it reacted with a propane torch. It would reach 2000deg in about 2-3s and pulling the torch away, it would be under 200 in another 3 seconds or so.
Yes, at the point you let off the pedal, the temperature is higher that the gauge shows, but I personally would use the word slightly instead of considerable.
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#40
by
R.O.R-2.0
on 09 Jul, 2011 10:09
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Wow, I didn't realize that engine you seized still lives! That makes me less worried about running high egt's. I figured running too high would turn that engine into scrap, but I suppose my chances would be high to keep running it until I can get a TDI long block replacement dropped in!
And Libby, I have the same Auber gauge and it reacts impressively fast. You can't really tell by how quickly the temp rises as you don't know how fast your EGT's are truly rising, but the real thing is how quickly the temp drops. You can see in his video going from 1300-800 in about a second. Even if the true temp was say 500deg (it would definitely be higher at that point), the probe still dropped a significant temp in a fairly short time, while still surrounded by hot air.
I wish I had taken a video of it, but I tested how quick it reacted with a propane torch. It would reach 2000deg in about 2-3s and pulling the torch away, it would be under 200 in another 3 seconds or so.
Yes, at the point you let off the pedal, the temperature is higher that the gauge shows, but I personally would use the word slightly instead of considerable.
people dont give these engines enough credit, you have to beat the holy S#-- out of them to kill them. or run them dry of coolant or oil..
ive never seen an engine take soo much abuse and still run as stellar as my engine still does..
(i beat on it pretty hard right after it seized, i was kinda more or less trying to blow it up, but all it did, was get better.)
ive never seen an engine basically have a total recovery from the seize..
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#41
by
vdubspeed
on 09 Jul, 2011 16:30
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HOT DAMN!
We have great success!!! Built a $9 boost controller from Ace hardware and got the boost turned up to the 15psi range. It spikes some but mainly stays in that region. Runs AWESOME and the EGTs have plummeted. Where as I used to feather the throttle from hitting 1500...I have to FLOOR it to see 1200 and then it's time to shift.
I swear I have no more than $300 or $400 in this turbo install and it rips. I will probably be making a trip to the 1/4 mile track to get some numbers. I will do some in car and out of car video for sure.
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#42
by
R.O.R-2.0
on 10 Jul, 2011 10:48
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HOT DAMN!
We have great success!!! Built a $9 boost controller from Ace hardware and got the boost turned up to the 15psi range. It spikes some but mainly stays in that region. Runs AWESOME and the EGTs have plummeted. Where as I used to feather the throttle from hitting 1500...I have to FLOOR it to see 1200 and then it's time to shift.
I swear I have no more than $300 or $400 in this turbo install and it rips. I will probably be making a trip to the 1/4 mile track to get some numbers. I will do some in car and out of car video for sure.
finally, another believer!
i have WAY UNDER $1k in my TD rabbit..
wish i had a pyrometer..
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#43
by
vdubspeed
on 10 Jul, 2011 14:37
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yup...everything you have said has been true. I couldn't be more happy.
I don't understand how it could run any better even with a turbo pump.
It starts INSTANTLY, idles perfectly, NEVER smokes, hauls ass, and is a blast to drive.
I'm sold on NA IDI to turbo conversions.
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#44
by
lord_verminaard
on 15 Jul, 2011 10:39
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I've had my N/A to turbo engine up to 1450 F sustained for about 400 miles
with the only stopping to repair popped boost hoses.
I do have an oil cooler though, and coated pistons, and a metal head gasket, but otherwise it's a stock 1.6 NA engine and NA pump.
I actually hate low laggy the boost is and how much it smokes off of boost. Running about 12 psi which is as much as I can get without turning up the fuel more and making intersections vanish at stoplights. VNT is in my future.
But yeah, tough as hell little engines.
Brendan