Group A's group a rebuild
- Thread starter group a supra
- Start date
. How will you make the runners come off the main block flange though. My runners are already bigger that the block's ports. Will you use reducers, like let's say 38mm short runner widened to 48mm and take it from there?[/quote]
the runners will come of the head in 48mm
thats how you get the tq it stops it flowing back into the head and stalling the flow of gases acts like anti blowback system as the gases will always go to the outside wall
the runners will come of the head in 48mm
thats how you get the tq it stops it flowing back into the head and stalling the flow of gases acts like anti blowback system as the gases will always go to the outside wall
So if I get this straight, the ports on your main flange are of equal diameter to the engine exhaust ports, right? And you weld the wider runners straight to the flange, so if for instance you can look inside the runner towards the flange you can actually see a step to the motor port? Am I making any sense here?group a supra said:the runners will come of the head in 48mm
So if I get this straight, the ports on your main flange are of equal diameter to the engine exhaust ports, right?that is correct And you weld the wider runners straight to the flange, so if for instance you can look inside the runner towards the flange you can actually see a step to the motor port? Am I making any sense here yes you are spot on sir you got it one
And you weld the wider runners straight to the flange, so if for instance you can look inside the runner towards the flange you can actually see a step to the motor port? Am I making any sense here yes you are spot on sir you got it one
I'll definatelly ask him tomorrow, this is too good to just pass like that. (Homer voice) MOOORE TORQUE :yum:group a supra said:So if I get this straight, the ports on your main flange are of equal diameter to the engine exhaust ports, right?that is correct
yannis-supras said:
lmao let me know what his face looks like when you tell him or just take a photo :biglaugh:
I can be very persuassive when it's needed, in a good way I mean of course. I'd pay something extra if it will actually make a difference. I don't know the diameter availability but I think I could go for 45mm. 48mm will cramp everything in there, there's no way the runners would be able to bend in a similar way they are now.group a supra said:
45 sounds good about same size as the ss manifolds what wall diameter though i have gone 2.7mm wall after a lengthy chat with ian that includes the collectors as wellyannis-supras said:
IHI-RHC7 said:
jake you have bought a smile to my face roflmao here with the odd tear as well :biglaugh:
your comment has just topped of what has been national wtf day here in the uk has anyone else had national wtf day as i suspect it could be international wtf day lol:naughty:
IJ. said:
i thought it might have been so in that case can anyone tell me wtf has happened today lmao:biglaugh:
Ok, I had a good talk with my exhaust guy yesterday and after I told him about the benefits of a larger diameter runner he objected with that aproach and insisted that a smaller runner would certainly benefit the torque band whereas a wider runner would require more air from a bigger motor.group a supra said:
Ian agreed on this as well as my setup is totally different to yours.
So I'm sticking with the 42mm runners, which as I said before, I thought they are quite big as they are.
proabaly right there as you arnt going to be using the big cams that i have to breath into it so yes i agree 42 is proabaly alright to be fair ian is good with that kind of stuff
