Tuesday, January 14, 2014 - 06:05 pm, by: Tai Johnsen(Privatejohnsen)
I have a turbo you could use!
Re: compound setup. I like the idea, but it doesn't follow my KISS principles. My head hurts just thinking about the piping, let alone all the water and oil connections!
Wednesday, January 15, 2014 - 07:30 am, by: Mark Tierney(Mark_t)
Compound setups are complex but if you have the skills & patience to build it yourself, the gains are there. Go for it, id love to see this setup running in a soarer. it would be sooo much fun to drive.
Marc Evans from boost logic had a setup like this running in his 300zx that used to eat his competitors. This cool lil vid makes me salivate http://www.youtube.com/watch?v=y-Me6yWApzY
I'm not sure how the cops would go if they found you running it. I think an engineers certificate on this kinda setup would be a nightmare to get passed (unless you have a mate that can help)
Plenty of us will be watching with bated breath if you go this path.
btw, Someone on the forum went recored 2860's through Monroe....did they work out or were the cores too large for the 12a's to cope with ???
Wednesday, January 15, 2014 - 10:34 am, by: Kurt Atzmuller(Kurt)
Mark i'd love to see the look on the policemans face when the bonnet pops up! Would be very funny indeed! I'll have a look at your links when i get some more time tonight.
Jack i have this half finished setup i've been working on here and there for a while using 2 kkr 330 turbos which would also be a lot of fun on a 2j.
Wednesday, January 15, 2014 - 12:26 pm, by: James Buchan(Jrbuch)
I've got a spare vvti 1J head, and am interested in your 2j route Kurt.. Could always go a 2j bottom end myself.
Anyway, for me, I'd max out those little CT12's first and see what they can actually do, and go from there. Maybe adapt some 2JZ-GTE turbos to fit, or go something along the lines of GM highflows..
Wednesday, January 15, 2014 - 07:09 pm, by: Kurt Atzmuller(Kurt)
I've seen that you tube clip before crazy setup! Should have put some heat wrap in there for that silicon hose. That would fix that. Almost 7 grant for that compound kit lucky i can make it all myself!
Wednesday, January 15, 2014 - 07:39 pm, by: Kurt Atzmuller(Kurt)
It really would need to be matched and use the right size turbos.. if the small one came one at 1800-2000rpm and the large one around 4000-4500rpm. Gt45 might be to big.
I'd go for a kkr380 for the small one would spool up at 1600-2000rpm.
Would be best to make this smaller turbo setup first and try it out with the small one on and then try to find a turbo that'll kick in just before the small one starts flattening off power wise. It would need a 45-50mm external gate on the small turbo so theres plenty off bypass flow in the higher revs and one of my 40mm gates i already have would be fine on the larger turbo. Could run a seperate boost controller on each turbo or just one on the large turbo which would always need to run more boost than the smaller turbo.
Wednesday, January 15, 2014 - 09:16 pm, by: Blake Gloyn(Blakenz)
in a compound set up, the larger turbo is brought on much faster than normal. it's not like a sequential system, where you have to worry about where one flattens off and the other one starts etc
Wednesday, January 15, 2014 - 09:44 pm, by: Robert Day(Lexsmaz)
With the above pic i wonder if it's much of a restriction running the intake through the small turbo the whole time, obviously all good when its running on the small turbo but once the exhaust is directed towards the bigger turbo & the big turbo is working hard its still passing the intake air through the compressor housing of the small turbo as well, but the small turbo is not running as hard now because the exhaust has been re-directed to the big turbo, so could the small turbo Now slow down the flow of intake air ??? ..
If it was me i would put a by-pass pipe in between the intake side of the small turbo & the outlet of the small turbo that opens up when the second turbo starts to boost up strongly, so basically intake boosted air from the big turbo would then by pass the small turbo at high boost ..
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