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Go Back   SR20 Forum > Main Forums > SR20VE / SR16VE



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Old 06-07-2007, 04:20 AM   #1 (permalink)
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Adapting the Fujis - Any Point

At this point in time, my exhaust consists of some port-matched Fujis which the clown at the exhaust shop cut the single pipe and welded the mild-steel 2.5" exhaust to.

I went back and had them remove the remains of the pipe and give it back & now the 2.5" exhaust goes all the way to the secondaries. Whether this is going to improve power over the 2.3" original pipe or make it worse is anybody's guess.

Now that the Fujis are damaged goods anyway and as the cupboard is bare for custom 4 into 1 headers, can the Fujis be adapted to make more HP? We're only talking about the headers here, I don't have the cash or desire to remove my 2.5" exhaust system & put a 3" system on, mainly due to our new 95db @ 4,800rpm noise law here.

Ported head, standard valves with 3 angle valve job
Franklin Stage 4 cams
SR16VE pistons adapted so that compression is 12.8 to1

Looking for power from about 6,000rpm to 9,300ish rpm

Last edited by Clint : 06-07-2007 at 08:55 PM.
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Old 06-07-2007, 04:42 AM   #2 (permalink)
vzr
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Hey Clint, Not sure if this helps, But I was looking to make a set of headers for my Sr16ve. Now, *** that my not sound exciting, I work as a cad programmer at a stainless steel merchant in east tamaki. Basically, I write programmes to cut shapes out of stainless on a laser. My thoughts are that i could supply you with all the flanges (free) and some bends etc (these would be at cost price but still cheap!) for you to have a crack at, and if you get the desired results, then i can whack one together also! I would take the plung myself, but at this stage i rely on my car too much for transport, so can't afford to have it off the road....AT ALL! i already make flanges etc for Turbo Vehicles, Spec 2, and a few of the Evo builders in the auckland, hamilton area so i'm confident in getting the flanges part right. I really appreciate all the pioneering work you guys are doing and if this helps a fellow VE enthusiast run better, then i'm in! If any one else is interested, let me now!
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Old 06-07-2007, 04:45 AM   #3 (permalink)
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.........just another thought...... if the Fuji's already work well, they could be a good base to redesign a new set, In terms of runner length etc. Port matching would also be easier as i can get the laser to within +/-0.1mm
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Old 06-07-2007, 05:06 AM   #4 (permalink)
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Definitely interested What a wicked offer... send me a PM with your contact details & we can discuss it further.
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Old 06-07-2007, 05:16 AM   #5 (permalink)
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Mr. Vzr, myself and Darryl are about to undergo some development of VE headers over here similar to the design Charles has come up with. Your offer here comes at a REALLY convenient time! I'd be seriously interested in sourcing the parts off you and we'd do you a really good deal on some headers (we havn't sussed costings yet). Was looking at some for myself, Amdeman, clint as well a couple of others who'd be keen.
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Old 06-07-2007, 05:36 AM   #6 (permalink)
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This sounds promising. I've just PM'd Clint about what i can and cannot do. Basically, i can get you all the laser cut parts (flanges) for nothing, and the elbows and straight pipe for cost. I'm really interested in developing a mean set of local headers, which i beleive could be done for very little outlay. Obviously, I can't start churning out free stuff to everybody, but, i can certainly get a few sets out to get developed! If any of you guys have a spare gasket, or an old OEM mani, i can at least get the 'block' flange draw up and cut out, then it's easy! I just need to know what bends etc are required and we're in business! Let me know if any of you guy's have a welder to get it all together! This could really benifit our small but enthusiastic VE community!
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Old 06-07-2007, 05:38 AM   #7 (permalink)
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Darryl has welding gear, I have a factory set of VE primaries you can use, PM me an address or whatever and I can get them to you this weekend dude. I'm am keen as hell to get some local made parts for the VE's into production aswell!
Team effort is going to be the key here it seems
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Old 06-07-2007, 05:40 AM   #8 (permalink)
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also...I work out in east tamaki, so if any of you guys are in the area, and want to swing by and have a look at what i can get, feel free to PM me! I live pretty close, and my office is open most weekends, so if that suit's i'm usually on hand to help you guys out! But remember, the snowboardin season kicks off soon, so i'll be away most weekends after the 16th!
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Old 06-07-2007, 10:31 AM   #9 (permalink)
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Quote:
Originally Posted by vzr View Post
.........just another thought...... if the Fuji's already work well, they could be a good base to redesign a new set, In terms of runner length etc. Port matching would also be easier as i can get the laser to within +/-0.1mm
This is also an idea... due to the ground clearance issues for a 4 into 1 setup there must be a better way to build a 4-2-1 for a built motor.

What would you do design-wise though... would it still be 1 3/4 inches from the flange stepping to 1 7/8 inches after about 10 inches? Where to from there? What total length would you make the secondaries and what size would be the best for those?

Has anybody tried this or had some built?
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Old 06-07-2007, 11:36 AM   #10 (permalink)
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Quote:
Originally Posted by vzr View Post
.........just another thought...... if the Fuji's already work well, they could be a good base to redesign a new set, In terms of runner length etc. Port matching would also be easier as i can get the laser to within +/-0.1mm
After some lengthy discussions with James (Punkoutnz) recently this couldn't come a better time.
Please let me know if there is anyways that I can help, or hinder, eh James ;-)
Any ideas or concwpts would be FANTASTIC and very helpfull.

I look forward to doing what I can in the development of some tasty local performance parts for our beloved VE!
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Old 06-07-2007, 12:43 PM   #11 (permalink)
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another option for your secondaries is using the burns V collector(for 2-1) and play with the lengths there. I believe the longer primaries of the fuji help the upper RPMs of the VE.
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Old 06-07-2007, 05:06 PM   #12 (permalink)
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I was also thinking about the possibility of a 4-2-1 set up. It would definately reduce the cringe factor when driving over our not-so-smooth roads! I'm hoping to catch up with james (and anyone else whose interested) on saturday to go over some idea's and possible get a few flanges drawn up (and cut if there's time!) I'll be letting james know where and when a little later today, so either call him or PM me if you have some useful input
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Old 06-07-2007, 05:38 PM   #13 (permalink)
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There's a few options worth looking into. I'm dead keen on the 4>1 design for my car, drivability is less of a concern as I have my corolla for daily tasks if need be. I think it's also worthwhile doing what myself and darryl discussed regarding a design similar to the fuji.
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Old 06-07-2007, 05:51 PM   #14 (permalink)
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4-1 it is then! I don't know too much about header design, but from what i understand, 4-1 is better for top end any way, so it does make more sense, given the rev's we run at! james, what time suits you tomorrow? can you do early morning? like 9ish?
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Old 06-08-2007, 02:10 AM   #15 (permalink)
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Ooooooooooooooooooohhhh i like the sound of this


I would be keen for some local VE goodies!

Pity I'm all the way down in Wellington, it seems that Auckland is the hotbed of VE activity in NZ!!

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Old 06-08-2007, 04:07 AM   #16 (permalink)
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I'm sure we can send some down your ways! If this is successful I think Darryl is keen to make a jig so we can semi-mass produce these. It's really up to him what cost they are as he's doing most of the fabrication work.
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Old 06-08-2007, 02:27 PM   #17 (permalink)
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Glad to see you guys are making progress down under with the Fuji header redesign. Looking forward to see what pops up and the gains you get. My max rev is 8K so I'm not sure if going from 2.3" to 2.5" to the cat would make any difference on my Fuji either. Good luck Clint!
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Old 06-09-2007, 02:04 AM   #18 (permalink)
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Thanks

Question: What pipe size are the primaries on a Fuji header?.... They're definitely long at about 15 inches. I may try building a custom set of secondaries to see if we can unleash any further HP from them that way.
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Old 06-09-2007, 02:42 AM   #19 (permalink)
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Quote:
Originally Posted by zerogravity View Post
another option for your secondaries is using the burns V collector(for 2-1) and play with the lengths there. I believe the longer primaries of the fuji help the upper RPMs of the VE.
Also an idea.. It looks like your engine is almost identical in spec to mine. Are you running Fujitsubo at the moment too?
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Old 06-09-2007, 03:49 AM   #20 (permalink)
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that's a negative. I just been researching a bunch of different header options and seeing what kind of results i'd get. Im currently sporting an DE.
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