Crossover eliminator for 3.0.
Nov 17, 2006 | 06:29 PM
#21
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so basicly a flex pipe? anyways i might be interested in this.
Dec 19, 2006 | 09:33 AM
#23
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From: Dallas, TX
What do you have so far?
I will be pulling mine off and was planning on using 2 p-side manifolds. My HG just started to go this week, white smoke and crap underneath the oil cap.
I may have to move quick so would love to see more as an option.
Thanks!
Mike
I will be pulling mine off and was planning on using 2 p-side manifolds. My HG just started to go this week, white smoke and crap underneath the oil cap.
I may have to move quick so would love to see more as an option.
Thanks!
Mike
Dec 19, 2006 | 09:50 AM
#24
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From: Winnipeg Canada
I'm waiting on a second set of manifolds to come. They should be shipped sometime over the break. THen I need to make a jig etc. They should be ready in the new year, the only thing holding me back right now is the spare manifolds.
Dec 19, 2006 | 10:07 AM
#26
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From: Winnipeg Canada
Sure, this may be true. However Toyota manifolds are typically well tuned and the major problem with the 3.0 design is the crossover. According to Toysrme with the 3vzfe there was about 10hp in the crossover and about 2-5 in the headers IIRC. Now a crossover should run around $200 or less hopefully and headers are at least twice that plus a crossover. So if all you are buying is a few ponies for $400-600 it doesn't make a whole lot of sense does it? Especially if that gain is only in the upper RPM range. Before I get anyone to give me any money I'm gonna do a before and after dyno run.
Dec 20, 2006 | 07:46 PM
#27
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Joined: Mar 2006
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From: Alhambra CA.
If you can make a simple single header come down from the passenger side (2"-2.5") center between the clutchfork and the side wall to 3 bolt flange just at the frame I can get the mufflershot to do the rest.
Also need the plugplate for the drivers side manfold.
Also need the plugplate for the drivers side manfold.
Feb 7, 2007 | 01:30 PM
#29
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From: new england
Want to bring this back up, because I want to do this. But I was thinking
take the crossover off, cut the pipe and save the flanges, to weld a
"2 or "2 1/4 to the passenger side the shape of the existing crossover.
Have it bent on the drivers side back towards the fire wall, have y-pipe that is
placed on the existing down tube (of course the y-pipe is spliced into the down tube)
and weld a plate on to the flange where the crossover use to enter the drivers manifold
to block it of.
Thats the easy version, I would love to replace the drivers manifold with a
passenger one and go "2 1/4 for a down tube and splice in the new crossover,
bent same as above.
What do you think
Woody
take the crossover off, cut the pipe and save the flanges, to weld a
"2 or "2 1/4 to the passenger side the shape of the existing crossover.
Have it bent on the drivers side back towards the fire wall, have y-pipe that is
placed on the existing down tube (of course the y-pipe is spliced into the down tube)
and weld a plate on to the flange where the crossover use to enter the drivers manifold
to block it of.
Thats the easy version, I would love to replace the drivers manifold with a
passenger one and go "2 1/4 for a down tube and splice in the new crossover,
bent same as above.
What do you think
Woody
Last edited by woodworth; Feb 7, 2007 at 01:32 PM.
Feb 7, 2007 | 01:43 PM
#30
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From: Dallas, TX
Sounds like it would work. I finally said f'it and got the Downey headers (I was replacing my HG at the same time)
check out the marketplace I have my stock manifolds and a double p-side manifold set that I had modded with some block offs up for sale.
Good luck.
Mike
check out the marketplace I have my stock manifolds and a double p-side manifold set that I had modded with some block offs up for sale.
Good luck.
Mike
Last edited by photomike72; Feb 7, 2007 at 01:52 PM.
Mar 15, 2013 | 09:15 AM
#34
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From: San Francisco East Bay
Um, you might be watching for a while. Suprathepeg's last post in this thread was 6 years ago. His (her) last post on this forum was 2 years ago.
Searching is a great tool, but if you're interested in a conversation, you might want to check the dates of the postings.
Searching is a great tool, but if you're interested in a conversation, you might want to check the dates of the postings.
Mar 16, 2013 | 03:09 PM
#35
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From: Oregon
Mar 16, 2013 | 05:32 PM
#36
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Posts: 139
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From: Leesport, PA
you want a crossover delete because if you look at how the exhaust system is set up from toyota the passenger's side exhaust all dumps into the drivers side bank right nextto the #6 exhaust port. The Exhaust down pipe eminates from the drivers side exhaust manifold btwn #4 and #6 exhaust port, so your #6 cylinder sees some higher than normal heat.
This causes blown headgaskets, burnt valves, and a significant loss in hp.
The oem cross over also apparently has an expansion chamber in it....
This causes blown headgaskets, burnt valves, and a significant loss in hp.
The oem cross over also apparently has an expansion chamber in it....
Dec 29, 2020 | 07:23 AM
#37
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Joined: Dec 2020
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I'm gonna have one fabbed up for my build and am wondering what kind of interest there is out there for more. I'm not looking to get rich or anything of these just wondering who would be interested in getting one.
This would basicly be a Y-pipe and a block off plate for the stock manifolds. 2" to 2.25 with maybe an o2 bung. I still have to work out how I'm gonna build it but the design it pretty simple and it will get rid on the stock crossover.
I don't know how much power this will free up but it will deffinately free up some. On the 3vzfe its usually worth ~10hp with headers being worth less then 5. If enough people are interested I'll do mine and take it to the dyno to see what its worth.
Initially I'm thinking the cost will be $180-$200USD with true mandrel bends and a flex section to make installation easier. Not the cheepest I know but bolt on, cheeper then headers. and gets rid of the crossover gasses coming into the manifold and onto cyl 6. The more I can have made the cheeper each one gets I'd like to get it down to $150 if I can.
let me know if there is interest and I'll put together a group buy.
This would basicly be a Y-pipe and a block off plate for the stock manifolds. 2" to 2.25 with maybe an o2 bung. I still have to work out how I'm gonna build it but the design it pretty simple and it will get rid on the stock crossover.
I don't know how much power this will free up but it will deffinately free up some. On the 3vzfe its usually worth ~10hp with headers being worth less then 5. If enough people are interested I'll do mine and take it to the dyno to see what its worth.
Initially I'm thinking the cost will be $180-$200USD with true mandrel bends and a flex section to make installation easier. Not the cheepest I know but bolt on, cheeper then headers. and gets rid of the crossover gasses coming into the manifold and onto cyl 6. The more I can have made the cheeper each one gets I'd like to get it down to $150 if I can.
let me know if there is interest and I'll put together a group buy.
Dec 29, 2020 | 07:59 AM
#38
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Joined: Sep 2007
Posts: 8,380
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From: San Francisco East Bay
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