bigtube header info


kellsled said:
yeah,been reading a few set-ups on honda tech and there running tri-y header with a good 2.5 inch system which is what im going for,just bought a good system and then hopefully this manifold then get it to you to work your magic :)
Click to expand...

I have found the tri-y header's have a tendency to give a flat spot or slight dip around 6-7k rpm from exhaust resonance but to then take off again at 7k giving good top end, you might not even notice it when driving or it may not occur on your setup just taught I would mention it
 
ijwhiteman said:
Well done lad, i'm confused about this too.

Sorry i didn't pm you back been so busy moving house. Difficult to get on line at the moment.
Click to expand...

dissapointed in ya lol oj get your exhaust system sorted yet? maybe wee should see if external blue could sort something with a group by for this blackworks tri-y bigtube manifold.looks a good piece of kit and its not a cheap rep
 
Vtec6000 said:
I have found the tri-y header's have a tendency to give a flat spot or slight dip around 6-7k rpm from exhaust resonance but to then take off again at 7k giving good top end, you might not even notice it when driving or it may not occur on your setup just taught I would mention it
Click to expand...

then well slap that turbo of yours on it haha oj was that with a quality header or rep mate?
 
kellsled said:
dissapointed in ya lol oj get your exhaust system sorted yet? maybe wee should see if external blue could sort something with a group by for this blackworks tri-y bigtube manifold.looks a good piece of kit and its not a cheap rep
Click to expand...

I just need a header but finances restrict it right now.

Haven't seen this blackworks one. Whats gorund clearance like? Can you have a full width rad?
 
Can anyone explain to me the logic in the shape of the ssr streetsweeper?

I understand the bismimoto idea that the equal length is good and the the bend dont matter because it flows just as well in a calculated larger bore bend as it would in a smaller straight pipe.

As for the ssr header I can understand longer primaries are good but surley they dont need to be that long?

The b-unit looks more logical in my eyes but maybe im missing something.
 
Matt-EK9 said:
I understand the bismimoto idea that the equal length is good and the the bend dont matter because it flows just as well in a calculated larger bore bend as it would in a smaller straight pipe.
Click to expand...

Each section of the primaries are different in width on the bisimoto headers, at every bend the ID changes...bisimoto's are also known to crack at the welds. Good quality header but only time will tell on the cracking. Trying to get to the dyno in the next 2 weeks to verify any positive power gains with it.
 
ijwhiteman said:
I just need a header but finances restrict it right now.

Haven't seen this blackworks one. Whats gorund clearance like? Can you have a full width rad?
Click to expand...

not sure on the ground clearance but it does seem to fit with a full length rad
 
I know of them...but no experience with them. Sorry buddy. Go with a name brand on your header is the only advise I can give.

Blox has a big tube header too, which many racers use out here in CA. I am getting one here soon.
 
tama666 said:
Each section of the primaries are different in width on the bisimoto headers, at every bend the ID changes...bisimoto's are also known to crack at the welds. Good quality header but only time will tell on the cracking. Trying to get to the dyno in the next 2 weeks to verify any positive power gains with it.
Click to expand...

Nice be interesting to see that graph yeah thats what I thought the bisimoto design did but whats so special about the ssr street sweeper anyone know why having a L shaped manifold helps anything?
 
All big tube tri-y headers have terrible ground clearance, if you look at the way the primaries run under the car then easy to see why!

Genuine hytech's are beautiful manifolds, but you can see from this pic of it mounted (moroso kicked out sump which is deeper than oem) how low it will hang

hytech_header_2.jpg



The street sweeper seems a perfect solution for ground clearance and i've read some good reviews online and seen some great results on the dyno. will be ordering mine in a couple months too so will be sure to post up some pics and eventually see how it does on my engine build (12.5 ish:1 comp B18C with stage 3 cams, ported head etc etc) :nice:
 
Last edited:
ground clearence is bad but its compromise to gain power, i know as damaged mine a few times and had to have welded
 
Thanks for that steven Its obvious now (feel little silly) that its the only way to have the primaries run like that without seriously cramping the pipes up or terrible clearance. Looking forward to seeing your thoughts.:nice:
 
So as my head is not ported there is no pint having a big tube?

In which case my ground clearance would be better then?
 
to be honest, i'm no header expert - just going by what i have read

however with the size of cams you are running and the compression etc Ian, i imagine there would be more potential with a custom header, weather it is "big tube" or not i dunno, best to speak to SSR / DTR / hytech etc for their thoughts

I know you have had your mugen modified, however this was lower down the manifold at the 2-1 join etc, as you can see with the likes of bisi / dtr / ssr, alot of the serious work goes into the size / route / joining of the primaries

i will be interested to see how the power band looks though and what specs the streetsweeper is built to for my engine (SSR build their manifolds to suit your individual engine specs)
 
stevenEK9 said:
to be honest, i'm no header expert - just going by what i have read

however with the size of cams you are running and the compression etc Ian, i imagine there would be more potential with a custom header, weather it is "big tube" or not i dunno, best to speak to SSR / DTR / hytech etc for their thoughts

I know you have had your mugen modified, however this was lower down the manifold at the 2-1 join etc, as you can see with the likes of bisi / dtr / ssr, alot of the serious work goes into the size / route / joining of the primaries

i will be interested to see how the power band looks though and what specs the streetsweeper is built to for my engine (SSR build their manifolds to suit your individual engine specs)
Click to expand...
ground clearance is defo an issue,altho on track is it likely to hit the tarmac my car just sits on the top of the tyre,dont want to be buying a big tube and then it getting destroyed
 
the high end manifolds like hytech. smsp, bisi have applications suited to stock engines and gains are impressive
 
Kellsled - my car is DECKED and it is the highest the coilovers will go :lol: front tyres are tucked in the arches and they only clear the arches due to the 4.5 degrees of camber...!!!

but anyways, SSR seem really helpful, sent a couple emails yesterday and they are able to build a street sweeper with a 2.5" collector so i can bolt this up to an off the shelf sports cat (will be having a custom true 2.5" system made up after that, straight through with 1 backbox)

ordering this tonight (304 stainless version), apparantly expected to take 10 days for fabrication, can't wait :naughty:
 
Nice can't wait to see this, seems everyone is ditching the Spoon these days I did debate it myself but its not worth it for me at the moment.

You dont expect to have any troubles with noise limits running only one silencer steven?
 
You must log in or register to reply here.
Back
Top