New TurboKraft rebuild journey

[gsxrken]

Originally Posted by gassian

Well... quick update
i know this update will conflict with my previous message above so "be nice"

We have decided to EFI it and we will start with the agreed K27 (Raptor X) turbo and see where it goes.

Hooah!!! Subscribed. Also this thread needs more pictures.

[gassian]

Originally Posted by gsxrken

Hooah!!! Subscribed. Also this thread needs more pictures.

i should bombard you guys with all the pretty pictures that Chris sends over...
get ready

[gassian]

The shiny + machined parts before assembly

Twin plugged


K27 with Raptor mod

[gassian]

Assembly photos

[16Volt]

Good call on the EFI. I wasted entirely too much time and money trying to get my motor running again on CIS. And the other folks are spot on, these motors are too valuable at this point to trust the CIS system which was used on them.

(TurboKraft will treat you right)

[Bucketlist]

Looks great, you will really enjoy this with efi and twin plug ignition!
In this current twin plugging modification do they use the same plug top and bottom as opposed to my 20 yr old mod that used 6 - 21mm (13/16) top and 6 - 18mm (11/16) bottom plugs?

[kamaro]

Originally Posted by 16Volt

Good call on the EFI. I wasted entirely too much time and money trying to get my motor running again on CIS. And the other folks are spot on, these motors are too valuable at this point to trust the CIS system which was used on them.

(TurboKraft will treat you right)

Its 1960s technology vs 2025's, I think its an easy decision!

[TurboKraft]

Originally Posted by Bucketlist

Looks great, you will really enjoy this with efi and twin plug ignition!
In this current twin plugging modification do they use the same plug top and bottom as opposed to my 20 yr old mod that used 6 - 21mm (13/16) top and 6 - 18mm (11/16) bottom plugs?

14mm threads top & bottom
5/8 hex spark plugs
So 12x identical Iridium spark plugs

[Bucketlist]

Originally Posted by TurboKraft

14mm threads top & bottom
5/8 hex spark plugs
So 12x identical Iridium spark plugs

Thanks Chris,
This should be much easier to deal with if you ever have to replace them. With EFI and Iridium plugs they may last forever.
I always wondered why some twin plug heads, mine for example, were machined for 2 different sized plugs. Another Porsche mystery?

[TurboKraft]

Originally Posted by Bucketlist

Thanks Chris,
This should be much easier to deal with if you ever have to replace them. With EFI and Iridium plugs they may last forever.
I always wondered why some twin plug heads, mine for example, were machined for 2 different sized plugs. Another Porsche mystery?

They typically last a long time, yes.

Re: smaller diameter thread spark plugs -- there is a school of thought that the less metal you remove from the cylinder heads, the better. That leaves more metal to absorb and dissipate heat energy from the valve seats, for instance.

When you spec Xtreme heads, you can specify 12mm plugs instead of standard 14mm.

[gassian]

I will also be posting this later in the For Sale section but wanted to start here.

Since we are changing my exhaust, i will sell my current BB single tip muffler.
I have gotten this muffler box strenghtened by re-welding it at a shop. Will have extra pictures later to show.
No issues with this exhaust and sounds great too.

SOLD...thanks PP

[gassian]

any tips on extending your patience at the home stretch?
specially after seeing this amazing work from TK

[Mocker]

Originally Posted by Black_Hat

I started modifying My Turbo before prices went through the roof. I'm trying to keep the car as stock looking as possible.
I have headers, and I added a Electromotive XDI2 to controll ignition when the stock ignition unavailable module (EZ-69) went out-
if the EZ-69 becomes available again its plug and play as I did not cut any wires.

The XDI2 has rev control , knock control, dual plug, RPM control for my pierson valve, ignition mapping.

I was curious about the XDI2 as a possible compromise solution to fine-tuning my 930's ignition. I just looked on their site, and it looks like Electromotive is no longer selling product, and are looking to sell their biz.

https://electromotive.com/our-products/xdi-ignition/

[gassian]

Been a while since i posted an update...
Car started, tuned, dyno'd and here is a short clip on the dyno
https://youtube.com/shorts/GyLomnxy7NI?si=eaEpMQroiszeAuy1


Few little things that Chris is taking care of before pick up...
I am open to have the HP/TQ guessing game

[lite75]

Sounds perfect!

[Mocker]

Originally Posted by gassian

i am open to have the hp/tq guessing game

420 hp, 400 torks?

[Bucketlist]

Wow, that does sound awesome! Id guess somewhere above 450 depending on fuel and tune. What does TK say?

[gassian]

Originally Posted by Mocker

420 hp, 400 torks?

close enough

Originally Posted by Bucketlist

Wow, that does sound awesome! Id guess somewhere above 450 depending on fuel and tune. What does TK say?

to be clear also...this was on "conservative" dyno due to its prototype sw/firmware

Made 433.5 hp and 441 lb-ft (on 91 good ol west coast octane)
We might go back to the other dyno that we did the baseline dyno at but we shall see