Hugh's 1987 505 STX V6 Project

By diyauto
( 4 )

3 minute(s) of a 40 minute read

11-7-2015


I really got a chuckle out of that line as well. "Accidentally installed." I love it. If Rabin ever manages to find a company that will duplicate those springs I will buy at least two sets, one for this STX and another for the eventual V6 Turbo. Arun, you may be forced to provide measurements at some point!

Either today or tomorrow I will be pulling the STX into the hangar at work and doing a few things to it. If that works out then I hope to have video #2 posted and details here right after. I was at Princess Auto today and happened to spot some nice-looking rod ends that might be just the thing for my custom short shifter setup. Pricey, but worth it if they have the effect I want. Also, yesterday I removed the engine-driven viscous-coupled fan. I will be replacing it with an aftermarket dual variable-speed electric setup controlled by an adjustable thermostatic switch.

I also hope we can get together a few times this coming season and help each other move our projects forward, Rabin. This is half of the benefit to being part of a community like this, plus it's a lot of fun.




11-8-2015

Right now I suspect that a stock 145 BHP STX is significantly slower than a stock N9TEA car in both acceleration and top speed. Due only to the latter's turbo lag, I think the V6 might be a bit quicker off the line, but that will be about it. Still, you have to consider that my reference point is a five-speed XN6 car, so to me the V6 feels plenty quick. I'm saving the more serious engine mods for the later V6 Turbo project, but what I do want to do with this car a bit later is rebuild the low-mileage ZN3J I have in one of my other cars to the European spec (170 BHP) and swap it in. I think 25 extra HP would be a nice enhancement. It should run with the stock late-model Turbo 505s then, at least in North American tune.

When you get a chance to dyno that car of yours, Savo, it would be really interesting to see what your power-to-weight ratio is. I doubt that any 505 I build will be able to beat your 405, but the Turbo V6 might at least come close.

Once this project is on the road I'll measure acceleration and top speed and get some actual numbers.



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