pretty neat sequential twin turbo set up (2jz)
 

this kept me entertained for a little bit looking at all this so i figured i'd share. different for sure!

http://www.spracingonline.com/SP%20Images/spseq.jpg

http://www.spracingonline.com/SP%20Images/spseq1.jpg

http://www.spracingonline.com/SP%20Images/spseq2.jpg

http://www.spracingonline.com/SP%20Images/spseq3.jpg

http://www.spracingonline.com/SP%20Images/spseq4.jpg

http://www.spracingonline.com/SP%20Images/spseq5.jpg

Re: pretty neat sequential twin turbo set up (Turbo-charged)
 

http://www.spracingonline.com/SP%20I...equential1.jpg

http://www.spracingonline.com/SP%20I...equential2.jpg

http://www.spracingonline.com/SP%20I...equential3.jpg

http://www.spracingonline.com/SP%20I...equential4.jpg

http://www.spracingonline.com/SP%20I...equential7.jpg

http://spracingonline.com/upload/fil...pseqcoated.jpg

http://spracingonline.com/upload/fil...seqcoated1.jpg

wow. im pretty much speechless on the amount of work that went into that thing.

Re: (vietjdmboi)
 

enough work to have a $12,000 dollar price tag on it lol

Re: (Turbo-charged)
 

wow ... just wow ... I don't know where to begin:

1) A single will make more power
2) Just about ANY other type of header will flow better
3) Why?

Yes, the finished product looks great, but what exactly has been achieved here other than saying "look what I did"? Am I missing something here?

Re: (FastCougar)
 

jeeeez, i dont even know what to say

Wow there are so many thing wrong with that setup I don't even want to get started.

Re: (dave@passenger)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dave@passenger &raquo;</TD></TR><TR><TD CLASS="quote">Wow there are so many thing wrong with that setup I don't even want to get started.</TD></TR></TABLE>

Care to elaborate?

Re: (BoostedJeff)
 

are the runners exiting the ports of the head conjoined?

Re: (miller)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by miller &raquo;</TD></TR><TR><TD CLASS="quote">are the runners exiting the ports of the head conjoined?</TD></TR></TABLE>

appears to be so...looks like a log mani w/ runners for each port going to the turbo's....and a 44 gate split from the middle & end of the log...and then for some reason they have the 38mm on the exh side of the other turbo...my only guess is to block exh gases? and create a bigger pressure differential across the other turbine?

Re: (drumking15)
 

It looks like the pipe fairy took a big dump on the side of that motor http://images.honda-tech.com/set1//smile/emcrook.gif

I just dont see how that would work http://is.rely.net/1-92-30008-l-au16...EFX98SjN8A.gif

glorified log mani ftl

Re: (miller)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by miller &raquo;</TD></TR><TR><TD CLASS="quote">are the runners exiting the ports of the head conjoined?</TD></TR></TABLE>

Yes.

That is so when the valve is shut (look at the number two turbo downpipe - front turbo) it forces all gasses to the number one turbo for quick spool.

This is how you can achieve 17psi at 2100rpm on a Supra.

Once the valve is opened in the downpipe, both turbos operate in "true twin" form.

Re: (92TypeR)
 

So, its a "vtec" manifold! http://is.rely.net/1-92-30008-l-au16...EFX98SjN8A.gif

Nice work tho. https://honda-tech.com/forums/images...s/emcocktl.gif

Re: pretty neat sequential twin turbo set up (Turbo-charged)
 

Very interesting to say the least. I would like to see this in action. Also I wonder how efficient the setup is.

Re: pretty neat sequential twin turbo set up (-RedneckDave-)
 

i wonder if the guy making this was angry the whole time.


"WHY!!!" http://is.rely.net/1-92-65076-l-NREc...mLFY3DaZnA.gif


Marcus

Re: (92TypeR)
 

why would they have th 38mm bypassing the valve on the front turbo? thats a vacume actuated valve, so i'm asuming it opens at the same rate as the wastegate.

well, unless they are using all stock vacume routing with this setup?

looks cool, but if i went to all that trouble i would have run a compound sequential setup. one feeding the other.

grose, i just saw the log portion http://is.rely.net/1-92-30008-l-au16...EFX98SjN8A.gif

i believe either bmw or mercedes is running a sequential setup on one of their new diesel engines they are developing. the thought behind it is to make power earlier in the power band, not to just make it up top with one big turbo. i'd love to see a dyno plot off this setup.

edit: read here... http://www.autospeed.com/cms/A_2544/article.html

Re: (manifoldmiketyson)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manifoldmiketyson &raquo;</TD></TR><TR><TD CLASS="quote">
looks cool, but if i went to all that trouble i would have run a compound sequential setup. one feeding the other.

</TD></TR></TABLE>

This setup was designed for super quick spool, a compound turbo setup is just for really high boost levels. They serve two completely different purposes.

wow just wow

Re: (bubblevic)
 

Considering the working confines of the system, very well done. However, there are a lot of areas that could see improvement. For example, given more room with wich to work in, a better wastegate setup could be fabricated. The wastegate in this case is fed by one of the flange collector tubes. This forces the gases to make an extreme 135+ degree turn in order to BEGIN to exit. I won't even start on the fact that the wastegate vent tube is IN the collector vs. after it. But like I said, give the parameters under which the system had to fit, awesome fabrication job!

I too would like to see a dyno plot of the setup vs. a medium single "well spooling" turbo for the same engine.


Modified by FastCougar at 12:39 PM 12/11/2007

Re: (tony1)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">

This setup was designed for super quick spool, a compound turbo setup is just for really high boost levels. They serve two completely different purposes.</TD></TR></TABLE>

Actually compounds when done right spool a lot faster than any single and are obviously much more capable of making more pressure.

Re: (dave@passenger)
 

http://is.rely.net/1-92-30009-l-tEzP...BTGi0jOCgA.gif I feel like im looking at a maze

Re: (pgpbubble)
 

I hope they install a longer intake on the rear turbo atleast so its not sucking in the first ones turbine housing heat! Anyway, a little to much work for me then just doing a single but I believe that would be a killer road race setup!! thanks for Sharing. https://honda-tech.com/forums/images/smilies/emthup.gif

Re: (TIGboy)
 

there a couple different mani setups there, right?

I see a log, then a i see a couple tubular with different wastegate placments?