[Kris OK]

converting it from the R154 external slave to the stock GM internal slave.

Are you going to use the stock GM hydraulic TOB or an aftermarket one like Tilton? I think I’m going to go twin disk clutch since I have my engine out. The Tilton looks like it’ll bolt right up to the AR5 front bearing retainer to me.

Have you tried to find an electric steering rack? Would save you from having any electric pump - hydraulic lines at all. I don’t know what would fit the IS, though. Would probably be total custom job, but not terrible considering what you’ve accomplished so far.

 

[Kris OK]

using the stock GM TOB

Yep, I looked at the Tilton engineering plans for the clutch and did some measuring, it looks like it’ll work to me. I asked Tilton, but their engineer said they had not documented use of their HTOB with an AR5.

Looks like the FabBot AR5 - Ls adapter?
That HTOB you have is different than the Solstice one I have. The Solstice doesn’t have a bleeder, you have to vacuum bleed it. If it will fit, and I bet it will, I recommend getting a billet bearing spacer for that HTOB. It’s cheap insurance for if the plastic one shits the bed and ruins your day. Check it here.

Yeah I hear you on scope creep. I’ve got sidelined too many times by “while you’re in there”. That Model A looks pretty neat. You’ll have experience from that when/if you go electric rack on the IS.

 

[Kris OK]

That’s bad ass machining your own billet bearing support!

 

[Kris OK]

This is a California car

Hol up. You may have said that before and I missed it, if so. Cant you legally install a newer motor into an older chassis? What happens if you get caught?

 

[Kris OK]

Sounds like you are diagnosing the fuel over-pressure situation. That’s pretty high fuel pressure! If it ends up being the siphon pump how will you fix it? Can you drill it out or make a bypass to route some fuel around it?

 

[Kris OK]

Was the wet floor spots where the excess fuel was coming out of the headers? What’s the story on the injectors - I’m too lazy to look back thru the thread? I would definitely not trust this batch though. Would the excess fuel pressure cause them to behave the way they are?