d13b1 with a d16z6 head + turbo

[gouldy]

The d13 didn't last wiv the turbo on so the d16z6 turbo is goin in should be all in with in a month

[Lee4391]

Get some pictures up man.

[m@rk]

Get some pictures up man.

x2

love it when a engine goes...........

[nominous]

The d13 didn't last wiv the turbo on so the d16z6 turbo is goin in should be all in with in a month

In what way didn't it last? - what broke?

How long?
What was the PSI actually being run in the end?

Was it tuned properly on dyno etc?
What management?


Really interested in the feedback please since few people have done this...

[Site]

Don't worry about what psi its running its actually what power the engine makes that makes something go pop...if you make 200hp at 3psi its the same as 20psi making 200hp on a smaller turbo...

[nominous]

The power level it's at is a function of the PSI against the CFM and many other factors.

If you're trying to force air in at atmospheric + 22 Psi, there is going to be significant loading on the ring lands and certainly the big end bearings too.
The D13 uses tiny rods and the more PSI you shove down it's throat, the more likely it is that it's going to bend, buckle or snap something.

The other key here is the ignition timing, down to the tune, which if it's also detting is likely to kill all the same things: ie: det, premature ignition of the fuel/air mixture before TDC. - piston on upward stroke, massive explosion trying to force it down again, things bend when they are D13 sized.


I appreciate that you chose big numbers to make the point.
CFM is a deciding factor too, but more PSI on the smaller turbo also going to put it near the ege of it's efficency and turn it into a heat pump.


He's specified earlier which turbo he was using, so given the PSI, it'll give us a good idea of what happened

[Site]

easiest way for me to try and put it or that i was told a while back was...putting 20psi of air pressure through a small turbo might say result in 5m³ of air being forced in...whereas 2psi of the large turbo will result in 5m³ air being forced in...all the turbo is is a smaller or larger impeller pulling air into the engine at a higher rate than standard allowing more petrol to be added to the mix with a result of more power....

simple terms to put it but say;

the duty of the large turbo is 1m³/s
the volume of the small turbo is 0.05m³/s

In one second of the large turbo 1m³ of air will be pulled through and forced into the engine...
Where as in one second the small turbo pulls through 0.05m³ of air through and is forced into the engine...

This means the smaller turbo has in theory multiply its duty by 20 times to match the larger turbo....so in theory 1psi of the large turbo has the same duty of the 20psi turbo....

sorry thats a bit crude and simple but its how i would say it works

as you said though psi and power are relative to each other but power depends on the psi and size of turbo you are running....also yep the map comes into play a lot with a turbo with det etc as you said....the maps really the brain of the operation...doesnt matter how fit the engine/turbo is...if the brains dead nothing will work...

also psi as you said effects the turbo...especially ceramic impellers etc...need a steel impeller to run big psi through them...and yep running a small turbo at its limit will cause that to fail, or at least cause inefficiency somewhere along the line....

[gouldy]

Wow didn't expect this much interest lol I was only running 6psi on a t25 lol piston rings burnt up lol ive got a new map for the z6 I think im only gonna run 6psi again and see how it goes

[Site]

i like discussions z6 should be a winner...cant wait to have mine boosted

[nominous]

Still using the same turbo ?
Have you got the part number off the turbo ? (IIRC they fitted both Garret and KKK tubos to the saabs)

Was the spring in the external WG 6psi, or smaller & boost control device? (I have a Tial with a 3psi spring...)

What was the mapping? Dyno or road tune? wideband ? upload the map ?



You're the only person that's done this that sticks around to ask questions of, hencing asking a lot of them
I potentially want to try it myself...
All feedback is good

[gouldy]

Haha na not the same turbo using a t3 from an escort the map for the z6 is the same 1 me mate nick had n he had no prob with his

[nominous]

Was it this puppy?

http://www.ebay.com/itm/Rebuilt-Garrett ... 0791782917" onclick="window.open(this.href);return false;

Noting the 3 bolt outlet on the turbine and larger T25 inlet ??

[gouldy]

Yeah that's the 1 ive still got it but it does need a rebuild I couldn't b bothered so I brought the t3 lol

[nominous]

For later:

452068-1 ?
Compressor wheel: 54mm 55 trim, A/R 48
Turbine wheel: 53.8mm 61 trim, A/R 49

452068-3 ?
The compressor wheel is 54mm, 60 trim and is capable of flowing 28 lbs/min.
The turbine wheel 53mm, 62 trim and is made of 713 INCO.

28lbs/min

Rover T25 worthy of a look too.

[gouldy]

Well ive got the t3 now so gonna stick with this 1buh