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PostPosted: 09 Jul 2012 10:55 
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Location: puerto rico
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this is my new job, feel the difference from heaven to earth ..


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PostPosted: 10 Jul 2012 00:29 
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Are they custom made?
They look good, any reason why you didn't got 4-1?


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PostPosted: 10 Jul 2012 00:30 
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Have you actually tested this on a dyno to see if there is a real difference? A difference in 1/4 mile time? Something objective?


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PostPosted: 10 Jul 2012 12:24 
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Location: puerto rico
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ok the next thing I did was buy a TRI-Y HEADER 4-2-1 B18, we cut up the base of the block that goes with the weld and the base of mitsubishi mirage and dessordamos tubes down to upload it to not crash to the floor and leda ready ... and an incredible strength ..


http://www.ebay.com/itm/94-95-96-97-ACU ... af&vxp=mtr

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PostPosted: 10 Jul 2012 13:01 
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It's a bit hard to tell from the pic but it looks like no 1 and no 3 join.....no 2 and no 4 join.....fail. More failed mods.

It should be 1 and 4 joining together, 2 and 3 joining together.
They just won't work properly......ricer only parts.

Steve

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6G72 mivec Twin TDO5 20Gs up and running.
Scrapheap special making exactly 280 horses at some unknown rpm.
Engine dyno under construction.

It's easier to fool someone than it is to convince someone that they've been fooled.


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PostPosted: 10 Jul 2012 14:44 
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Joined: 13 Aug 2011 12:33
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Steve why are U so septic, the lad already said there's a huge difference from heaven to earth, beside i think his method of joining the cylinders different, has one major +, with its not as the factory did it. Stupid Mitsubishi engineers they cant even join the proper pipes lol, idiots haha.

Seriously i think he went even further :) looks like 1 to 2, 3 to 4.
The real question is: will this not harm the engine in longer mivec run?

Why did u not get RS manifold? Whats the reason for 4-2-1 set up not 4-1?
I thought them engines meant to make power in higher rev range, no?

For some strange reason it says 4-4-1 in the ebay description.
And it meant to add a lot of hp, i want this !!!!!

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PostPosted: 11 Jul 2012 11:52 
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the only thing I have to say is that the factory MIVEC engine is 4-2-1 ... and soon will go to the dyno and we'll let you know! thanks

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PostPosted: 11 Jul 2012 15:26 
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brccrx wrote:

Seriously i think he went even further :) looks like 1 to 2, 3 to 4.
The real question is: will this not harm the engine in longer mivec run?

!


It's all to do with the firing order.
1 and 4 fire 360 degrees apart from each other. likewise for 2 and 3.

Anyone who knows anything about exhausts knows that exhaust flows in pulses (waves) that travel at the speed of sound, when the wave gets to the collector there's a reflected low pressure wave that travels backwards up the pipe , now, get the order wrong and 2 cylinders will run different from the other 2 cylinders........different as they won't all flow the same amount of air but they'll get the same amount of fuel .......that means you'll get different AFRs across the cylinders. But you won't know without pulling the plugs.
The lean ones might detonate and the rich ones might make less power?

Steve

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6G72 mivec Twin TDO5 20Gs up and running.
Scrapheap special making exactly 280 horses at some unknown rpm.
Engine dyno under construction.

It's easier to fool someone than it is to convince someone that they've been fooled.


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PostPosted: 12 Jul 2012 00:27 
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Would that mean that if you connect a 4-2-1 manifold wrong, your exhaust would have a boxer burble?


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PostPosted: 12 Jul 2012 12:49 
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the headers of tri-and deep, and that comes headers for honda b18 engine which is v-tech, which is ok ps MIVEC difference?? if MIVEC V-tech and precise tolerance is oil !

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PostPosted: 02 Aug 2012 20:46 
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Joined: 30 May 2012 12:49
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Country: Puerto Rico
magn1t please read why the tri y headers have the design of 1-2 & 3-4 exhaust tubes together... i had the same one on my previous 83mm 4G93Mivec and the difference was big and the dyno numbers with only tri y header increased 7whp and 4ftq... so please look for info on the tri y headers and why their designs are made...


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PostPosted: 06 Aug 2012 18:35 
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Location: Lower Hutt
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These things are just slapped together in China by 5 year olds who don't know anything about engine design.
We even had a customer in at work who had a custom turbo manifold built for a (honda) split exhaust housing......same thing, 1 and 2 joined, 3 and 4 joined......fail.

He got told (nicely) to come back with a real one.
The internet makes it really easy for total idiots to become professionals in about 5 minutes flat.

Sure you might make 5 HP over what you had before, 5 horses is pretty much nothing, you might get 5 more horses from doing it right AND you might not blow the engine?

So, a proper tri Y design, 1 and 4 join, 2 and 3 join, then the 2 outlet pipes join further on. It must be too hard because you've got pipes crossing over.

Steve

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6G72 mivec Twin TDO5 20Gs up and running.
Scrapheap special making exactly 280 horses at some unknown rpm.
Engine dyno under construction.

It's easier to fool someone than it is to convince someone that they've been fooled.


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PostPosted: 07 Aug 2012 03:07 
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Joined: 27 Jul 2012 02:12
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Country: Cayman Islands
this is a proper tri y header which i plan on getting at some point

http://www.ebay.com/itm/HONDA-ACURA-B-S ... 2563wt_716


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PostPosted: 07 Aug 2012 10:08 
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Location: Lower Hutt
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Yes, that's a "real" one, that will work better.

Steve

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6G72 mivec Twin TDO5 20Gs up and running.
Scrapheap special making exactly 280 horses at some unknown rpm.
Engine dyno under construction.

It's easier to fool someone than it is to convince someone that they've been fooled.


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PostPosted: 07 Aug 2012 19:03 
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Joined: 30 May 2012 12:49
Posts: 34
Country: Puerto Rico
if that is a ''real'' header then why is that moslty all the fastest B series all motors use the SMSP or the Hitech headers??? nobody uses that toda style header...


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