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HybridZ

Triple Blowthrough Turbo


Dat73z

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On 6/4/2025 at 5:49 PM, calZ said:

The branding on their cover annoys the hell out of me. Obviously advertising their name is fine, but using up a significant chunk of prime fin area is crazy. 

It's similar to T3/Apex/others laser cutting their logo into their plate metal parts in the least structurally sound way possible. 

 

The Escort diff cover has their logo in about the same spot, but despite the much higher fluid capacity they kept it small. Only 3 fins are interrupted. 

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@calZ I agree, the logo location is unfortunate but I'm running with it as I'm working around various clearances and I didn't find great options. Given all of the modifications required of any cover, I had also weighed making my own but PTZ cut me a great deal 😁

 

I suppose the silver lining and eye opener for me was how much more aftermarket there is now for r200s than when I was looking to build one 10 or 15yrs ago. Just the availability of monolithic chromoly conversion stubs alone versus welded options is huge. 

 

@Zetsaz if you run the older r200 style covers you also need to open up the mounting flange bolt holes as they are upsized from m8 to m10 on the more "modern" r200s. Attached are some pics of the machining operations on the cover for a better idea. 

 

Unfortunately still delayed for my chassis to get scheduled in so I think I'm going to do some more fabrication and welding on various aspects while I wait so the shop won't need to worry about it. I've been hesitant to get too far into the bodywork at home as our garage is attached and my wife doesn't like the mess and chemicals 😂

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  • 1 month later...

Took a break from the build this past month to focus on family and other projects, but I'm constantly reminded of the Z 😂

 

Picking up where I left off, the bare chassis is strapped on a body dolly tentatively scheduled to the bodyshop in August and misc. parts have been trickling in for the eventual reassembly. 

 

I saw an episode of the new Freiburger and Finnegan show where they brought back the v8 blowthrough turbo Rotsun and found their T3 rear diff mount fasteners coming loose. I have the same T3 mount and have also ran into the same issues as I've posted earlier in the thread. My plan is to drill and safety wire everything, but it was a good reminder that I still needed to check clearances and modify if needed ideally before everything is painted and finished. 

 

The diff still bolts up as it should with the nice PTZ rear cover and escort rear member. This weekend I'll mock up the rear section of the twin 60mm exhaust again and see what needs adjusting. 

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  • 2 weeks later...

Thanks he's usually around when I'm working on projects but mostly out of frame. 

 

Spent a couple weeks recovering from surgury but feeling well enough now to start back in on things. Working through clearancing the rear end for the twin 60mm exhaust tonight I realize I should probably just fully modify everything now versus after the underside gets refinished.

 

I clearanced the t3 r200SN front mount, and while the welds aren't the most aesthetic, I'm fairly impressed as it has full root penetration. Working forward, I had previously clearanced the rear crossmember but I think I want to fully plate it out and weld in some structural reinforcement. 

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Looking through some old reference videos I found one from a couple years ago on carb sync check, throttle response and engine movement with the new at that time Milkfab engine mounts. You could balance a glass of water on the valve cover on idle and rev 😆. I had played with a few configurations and had it pretty dialed at that point, with an emphasis on driveability and response. 

 

I'm hoping when it comes back together the response will be even snappier with the more free flowing Protunerz manifold and vband G Series turbo. 

Edited by Dat73z
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