Very Frustrated

[Roger 911]

Originally Posted by nynor

please, no one, do not take the advice above.

Beat me to it!

[vanosman]

based on your gut feeling or personal experience or because you have thousands of posts saying DON'T LISTEN OVER & OVER ?

The Tial has double springs, it's practically "welded" SHUT practically.
DO YOU HAVE A TIAL WG ? You want a pic of the 2nd spring i removed ?

K26-6 was too small because the 911 division wasn't playing ball with the front engine engineers and limited the 951 VS C2, YOU SHOULD KNOW THE HISTORY AND KNOW THE REAR ENGINE GUYS GET THEIR WAY AND KILLED 968 968T & 928 DEAD !

When you have chips (run richer NOT LEANER) and 3bar fuel pressure you will run richer,

Simple fix is larger 26-8 with way more CFM at top.


Unspent rich fuel comes out the tailpipe as BLACK, watch any turbo between shifts, watch the black smoke out the back of 1000hp GTR until the the RPM's get going then it leans out because of the CFM increases and the velocity flows faster.

Originally Posted by nynor

please, no one, do not take the advice above.

[vanosman]

My tial WG from my experience, the only change was k26-6 rebuilt swapped to k26-8, Nothing else changed but the WG spring & boost controller

already had all the bolt ons

YOU MAY HAVE THE SMALLER 38MM TIAL NOT THE ONE WITH DUAL SPRINGS

Originally Posted by Roger 911

Beat me to it!

[Roger 911]

Originally Posted by vanosman

My tial WG from my experience, the only change was k26-6 rebuilt swapped to k26-8, Nothing else changed but the WG spring & boost controller

already had all the bolt ons

YOU MAY HAVE THE SMALLER 38MM TIAL NOT THE ONE WITH DUAL SPRINGS

Yes, I have 38MM Tial. If I "welded it shut", I would blow the head off, even with my recently installed wide fire head gasket. After installing the Tial, I went for a test drive to dial in the boost using the MBC. I was initially seeing 20 psi until I dialed it back to 15 psi. The K26/6 has the same compressor side as the K26/8. It is capable of producing the same boost as as the K26/8, it just can't hold that boost as high in the rpm range, hence the 30 hp increase for the S using essentially the same boost. However, on the other end, the K26/6 spools up a few hundred rpms sooner.

From my perspective, I have no desire to perform the modifications you suggest. If you read my posts, you would understand this. Having said that, I'm glad that you are happy with the mods you have made and that they "moisten your genitalia". That's great, but it's not what I'm looking for.

Roger

[vanosman]

Originally Posted by Roger 911

Yes, I have 38MM Tial. If I "welded it shut", I would blow the head off, even with my recently installed wide fire head gasket. After installing the Tial, I went for a test drive to dial in the boost using the MBC. I was initially seeing 20 psi until I dialed it back to 15 psi. The K26/6 has the same compressor side as the K26/8. It is capable of producing the same boost as as the K26/8, it just can't hold that boost as high in the rpm range, hence the 30 hp increase for the S using essentially the same boost. However, on the other end, the K26/6 spools up a few hundred rpms sooner.

From my perspective, I have no desire to perform the modifications you suggest. If you read my posts, you would understand this. Having said that, I'm glad that you are happy with the mods you have made and that they "moisten your genitalia". That's great, but it's not what I'm looking for.

Roger

I basically turned 1986 into 1989 951 with burned FACTORY CUP chips, cup clutch , cup flywheel, etc

Porsche CUP, that isn't what you're looking for? It's the most reliable factory dyno tested way to go buddy. But you think that you know better than 12 Factory German dynos on a 951 apparently. Perhaps you do, perhaps you don't at all.

LISTEN TO THIS GUY, HE SMARTER THAN DR. PORSCHE

[vanosman]

20psi on k26-6 don't sound right in 3rd gear, have to see that on a gauge to believe.

Anyone here have a vid of running 20psi on baby 26-6 in 3rd gear on stock head ?
----------------------------------------------------------------------------------------------------

I was initially seeing 20 psi until I dialed it back to 15 psi. The K26/6 has the same compressor side as the K26/8. It is capable of producing the same boost as as the K26/8, it just can't hold that boost as high in the rpm range, hence the 30 hp increase for the S using essentially the same boost. However, on the other end, the K26/6 spools up a few hundred rpms sooner.

From my perspective, I have no desire to perform the modifications you suggest. If you read my posts, you would understand this. Having said that, I'm glad that you are happy with the mods you have made and that they "moisten your genitalia". That's great, but it's not what I'm looking for.
==============

Roger,
1989 rebuilt k26-8 with ball bearing will outspool the baby 1986 in any RPM.

I'm on my 3rd turbo buddy. Had nearly same setup on red 951 back in 2006.


but don't listen to the guys that have 1989 951 or Cup mods, listen to the baby k26-6 guys that buy all the bolt ons to reach goal of max 270ft lb.

20psi on 26-6? you don't have enough CFM homie, stick with 15psi max.

[Roger 911]

Originally Posted by vanosman

I basically turned 1986 into 1989 951 with burned FACTORY CUP chips, cup clutch , cup flywheel, etc

Porsche CUP, that isn't what you're looking for? It's the most reliable factory dyno tested way to go buddy. But you think that you know better than 12 Factory German dynos on a 951 apparently. Perhaps you do, perhaps you don't at all.

LISTEN TO THIS GUY, HE SMARTER THAN DR. PORSCHE

Again, you haven't read what I posted previously (big sigh). I am 100% content with the power that the current configuration is making. 100%!

And yes, when it comes to understanding MY needs, I am 100% smarter than you, "12 German dynos", and yes even "Dr. Porsche".

Enjoy your car the way you want it. It's yours. I'll enjoy mine the way I want it.

Roger

[vanosman]

k26-8 | eBay

k26-8, several on Ebay, they are in demand because they bolt right up to your non S 951 and make +300tq on your bolt on config.

It's not vanosman mod, it's called simple Porsche improvement. (But don't have anyone here listen to entire paragraph)

Get Hip and sell your baby for one of these 1989 turbochargers & then do the rest of your bolt ons, i sold my rebuilt baby in less than a year,

thank me later for explaining how 1986 turbocharger CFM isn't what your car wants and you don't know what your saying about spool times either. K27 spool has lag on stock heads for certain, but you're confused & misleading folks, this i understand.

Also sold those 17" C2 rims you guys have when i upgraded to 993TT 18" hollow spokes back in 2005 & got the 1998 Nappa leather seats with them, they plug straight in to the seat harness with 12 way power & heat.

but don't listen, just learn the hard way

[vanosman]

No way are you kidding me, I'm NOT smarter than Porsche AG, Weissach or Dr. Porsche or Ferry. Not even close buddy, that why i take notes on what they did to 1989 and Cup 951 for reliable power & proper torque curves on their German dynos mapped onto bland chips burned to factory cup chips vs some chips on Ebay tuned by Larry & Moe at Autothority.

If you try to market Cup chips the Nazi's will sue ya faster than you can try to steal PORSCHE FONT letters & their crest

'05 M3 CSL Euro bumper modded vert silver grey SMG
'86 951 Euro German Spec Cup mods guards read 5spd
'11 9-3T Saab cab silver grey 6spd
'01 330i Titanium paddle
'15 SRT392 Phantom Black 6spd
'01 Jeep 4x4

[vanosman]

Originally Posted by Roger 911

Yes, the shut off seems like over boost protection, except that supposedly, the 951 MAX chip does not utilize this. The drop in pressue would certainly imply wastegate. However, both of these seem to conflict.

Roger

Cup chips don't have overboost protection either, don't need it, don't want it and never got baby 26-6 to overboost with shimmed wastegate or with Tial 46mm dual spring or maxed knob because it wouldn't make CFM to do that and it was bb rebuilt.


the orig poster,
the AFM & TPS sensor do fail and they can screw with idle and throttle and A/F , however from reading areas you addressed them, seems like you did cover most of the other suspect areas like O2 and such, looks like you on right track.

[nynor]

i have overboosted with my stock wastegate and stock turbocharger. so, it isn't a gut feeling. the hose at the wastegate had a split at the nipple.

again, do not follow this guy's advice. you will melt pistons, blow your head gasket, and damage the crankshaft girdle.

[vanosman]

Originally Posted by nynor

i have overboosted with my stock wastegate and stock turbocharger. so, it isn't a gut feeling. the hose at the wastegate had a split at the nipple.

again, do not follow this guy's advice. you will melt pistons, blow your head gasket, and damage the crankshaft girdle.

at least you admit your line was was the issue not the setup. Your making some sense.

But why scare everyone who wants to change from 86 to the 89 setup then upgraded to Cup ?

k26-8 isn't a SCARY BIG FLOW MONSTER ! Cup Chips are mapped from the Factory to NOT EXPLODE.

It's a reliable setup that Tom Charlesworth Porsche of Tulsa setup on his 951 as well.

Anyone trust this guy over Weissach dyno teams in 1988 or a German Trained Tech with a BRAND NEW PORSCHE LIFT ?

I trust them, but you don't because ? "you will melt pistons, blow your head gasket, and damage the crankshaft girdle."

[nynor]

i am not scaring people. i am telling them not to do what you said in that post because it will destroy their engine. go look at your post i quoted and get back to me.

[soxnail]

Gentlemen
A little civility?
Strong opinions aside the object is to get every owner to the point they specifically want to get too.
Lets stick to facts...destroyed engines are no fun (personal experience ) Nynor has been at this for a very long time.
Sox

[rick13]

I can run 20 psi on my 26/6 all day. It should be noted that I have had my hot side "shaved".

Lindsey chips
55# injectors, 3 bar fpr
3 inch exhaust...cat deleted
Adjustable boost control
Lindsey dual port waste gate
B&B Stainless racing headers

[Roger 911]

I got everything back together after my rod bearing replacement and turbo rebuild. The rebuilt turbo from Evergreen looks beautiful. As you can see in the photo below, the turbine blades on the hot side were pretty mangled, so obviously this was replaced.




Runs good, but I'm experiencing a bit more lag than I was before. I would expect LESS lag with the good shaft/blades. I'm wondering if this may be normal as the new bearings in the turbo "break in", i.e., it may loosen up after a while. The only other change I made was a venturi delete (which I don't think should have any impact on this). I thought I'd clear this question up before before I spend too much time searching for vacuum or exhaust leaks.

Any thoughts? Thanks.

Roger