Honda intake manifold
#342
Eh, I'm not convinced there is enough port velocity at idle for that to actually work, but I could be wrong.
Bisimoto did quite a few staged injection tests that lead him to stick with carbs on his race cars for a long time until injector technology got a lot better.
You have to place an injector like 4 feet upstream to obtain the same atomization quality as a carb!
Bisimoto did quite a few staged injection tests that lead him to stick with carbs on his race cars for a long time until injector technology got a lot better.
You have to place an injector like 4 feet upstream to obtain the same atomization quality as a carb!
#344
Yeah, I understand the table.
I just have doubts that you could get a comparable idle to a port firing injector through injector phase adjustment alone. If you could, I would wager the OEMs would be doing it, since port firing injector is a horrible design compromise for improved idle and lower emissions at the expense of power.
If they could make it work with some software trickery, I imagine you'd see it done from the factory.
I just have doubts that you could get a comparable idle to a port firing injector through injector phase adjustment alone. If you could, I would wager the OEMs would be doing it, since port firing injector is a horrible design compromise for improved idle and lower emissions at the expense of power.
If they could make it work with some software trickery, I imagine you'd see it done from the factory.
#345
Doesn't matter, they're both turds. The square top, while still not ideal, is a vast improvement over any variation of USDM manifolds. That includes hogged out and ported USDM manifolds. The best performing 1.8 N/A manifold I've witnessed is an aftermarket Honda manifold grafted onto a BP4W manifold flange. Big gains everywhere.
What's puzzling is why the NA hp junkies haven't been switching IM's since the first miata, and why it was the turbo ****** who did it in a big way.
I was always skeptical of the claim that "big IM provides gains on turbo cars but not NA cars".
#348
So I just picked up a D16 stock manifold for free to play around with. the ports match up almost perfectly with the B6, but they are a bit more "oval" and the head will need a bit of port matching.
Other than that, seems like it can be re-drilled.
I'll update with more info later on. Also going to try a B16 mani as well.
How much narrower is the B6 VS the BP for port spacing?
Other than that, seems like it can be re-drilled.
I'll update with more info later on. Also going to try a B16 mani as well.
How much narrower is the B6 VS the BP for port spacing?
#355
So it looks like the only way I am going to be able to do this is if I get a B16 manifold, chop the flange off, weld new flange on and use the secondary injector ports further up the runners as the primary and use the edelbrock fuel rail.
Injector tip to injector tip on B16 is 90mm and on B6 is 86mm.
Injector tip to injector tip on B16 is 90mm and on B6 is 86mm.
#360
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My manifold is a blox manifold. Savington put the same manifold on his VVT head, check his build thread for 1.8 fitment.
I don't like the price of the edelbrock manifold, leatherface just scored a Blox mani on ebay for $135 shipped. If you search google you can find them for under $200 brand new.
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I don't like the price of the edelbrock manifold, leatherface just scored a Blox mani on ebay for $135 shipped. If you search google you can find them for under $200 brand new.
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