Are headers better for a turbo 350z?

i always wondered if it makes a difference adding headers to a turbo 350z. todays video i install and test tubular headers and compare to boosting with stock headers.

[@jackturner7992]

I've been slowly putting together what I need to turbo my de and this channel has been so helpful for all the little things you usually don't think about that add up, thank you man! Definitely gonna get the maf voltage extender and heater line relocation

[@StreetHeem]

i knew the headers was the culprit🙏. commented this 2 videos ago. good stuff

[@sickassperro]

I don’t think he reads his comments often, I’ve posted a handful of helpful stuff I feel like but got no response and other people too. Or he just doesn’t care and wants to figure it out on his own 🤷‍♂️.

[@Scoots1994]

The headers are not "the" culprit, they are yet another one in a long line of issues :) The back pressure still is higher than it should be.

[@fernandohood5542]

Yes. There is a guy who makes a kit with vband headers. VFP tuning. Corky Bell's book would have put you on the right track. Measuring back pressure verses boost pressure would have revealed it all. What clutch are you using? 15 pounds of boost is a lot. A better choice of turbo and intercooler core will give you even better results.

[@GearheadsAutofab]

Funny thing …..I have that book on my night stand started reading it like a year ago good stuff!

[@cuppy8221]

buying headers now been looking for info like this because i have a rev9 kit and didn think there was a way to fit headers so ig ima try now

[@zbene95]

love seeing these videos man. keep it up! always wanted to get into welding and fabrication 👍

[@Tommikegetitright101i]

That’s wild crazy results

[@ChosenFew1320]

Good video bro thanks for sharing. both of mine are boosted 06 revup mid Mount pushing 11lbs 07 hr rear Mount on 14lbs

[@MonkeyRenchGarage]

Niiiiiice work bro. Finally got that number and some more information. My Link ECU should be here Tuesday. Then I’m ordering my complete fuel system. Gotta add a set of headers to the list. And those are some eBay headers. Getting the job done. Nice.

[@Fackler91]

Nice comparison

[@user-km8wk6bd5c]

Well done👍

[@Win.mill20]

Hell yeah can’t wait for next video 🎉 fuel system e85 is next I’m guessing

[@GearheadsAutofab]

Eventually…..but that’s allot of work, and parts and upgrades……I want to make as close to 600hp on a basic pump and injectors as possible. Just to see what’s possible on the most simple setup Eventually I will have to do e85 probably…

[@Win.mill20]

OK for sure can’t wait to see more progress on the build on the road to 600 I really appreciate you sharing the knowledge and not gatekeeping your videos help me and so many other people thank you

[@stevengrizzle]

nice!

[@MonkeyRenchGarage]

Can you do a video manipulating the vvt in the mid range to show how you can manipulate the tq to keep it below 400tq below 4000rpm?

[@rickyboostedhonda27]

What’s the absolutely max HP for Nippon rods and Pistons for a b18b please

[@rondellneal8470]

I would love to buy the pipe kit can you make me one please

[@Scoots1994]

There just isn't room to fit the optimum size tube for the up pipe, so some incremental improvements in flow are possible with the merge and wastegate, but the limit is close because of that up pipe size limit.

[@StreetHeem]

what’s the optimum size for the uppipe? 2.75” or 3”? I thought it was best to keep the size the same as the exhaust inlet.

[@Scoots1994]

@@StreetHeem 3" would be optimal, into a turbine housing that can handle it. That's for peak power though. With the 2.5" used here it becomes a back pressure issue at peak revs, as does the T3 flange. But anything below 500hp the smaller tubing helps spool.

[@tyriquesmithen]

What headers are those?

[@Scoots1994]

520 at 15psi is incredible considering stock hp and doubling the atmospheric pressure.

[@rondellneal8470]

Can you sell the piping kit please and thank you

[@cuppy8221]

So do you think if I do just aftermarket headers and leave that y crossover pipe alone do you think I’d still have back pressure issues?

[@GearheadsAutofab]

I think the biggest impact was Headers, Ported v pipe / crossover pipe But you will have to make a new down pipe to fit headers. They won’t fit on the original kit

[@kridl6790]

How did you get the driver side header to fit with the down pipe?

[@GearheadsAutofab]

I designed a kit to move the heater hose pipe to the passenger side….then I built a 3 inch down pipe and it allowed the driver side header to fit. The kit is for sale on Www.Nisdaautosport.com

[@garethjohnstone9282]

Mate, can you list the things you upgraded over the baseline kit, please? Thanks.

[@GearheadsAutofab]

Ok, you mentioned you blew up at around 450 chp. The thing is the turbo kits mostly use stock headers and small piping to be able to fit in the limited space. This make the back pressure really high, mine was 32psi back pressure at 15 psi boost, so…..the most gains I got where from going to a good header and back bigger pre turbo piping and better merge collector to reduce back pressure. Also the tuning is super important, cam angle can create massive low end torque and break the motor between 3000-5000 rpm, so I took 50 torque out of the spool up area using cam angle and timing to prevent motor failure. So far it’s working I’m at 525hp now still on my 160k motor 2 years in to boosting. You can always email me if you boost again and need anything. [e-mail]

[@garethjohnstone9282]

@GearheadsAutofab Thanks for the reply. The turbo kit I had was a twin turbo from a company called Power Enterprise. It came with its own manifolds and it was straight through exhaust, manifold back. I sold that car because after I bought a fully uprated bottom end package, it just kept overheating so the garage replaced all cooling components. Didn't solve it. The guy I sold it to, took the motor apart and notified me the garage I had fit the new bottom end, etc, hadn't replaced the head gasket, he re-used the old one despite me supplying a full kit. Spent a fortune, sold on cheap as faulty because of an old coot too proud to admit he forgot to change the head gasket. This rev9 looks like a good cheap entry point to actually get it FI, then upgraded from there. Your videos and info will be really valuable as I upgrade it. Tuning cars here in the UK is very expensive, especially turbo conversions, and I'm not mechanically minded so I have to rely on others. So your vids will help and I'll be sure to drop you an email. 520whp is crazy. It must be one of the highest power stock 350z's.

[@rickyboostedhonda27]

Hey so I heard from a friend you made 680hp on Honda b18 Nippon cast pistons and rods. And it’s been going 3 years strong. I’m curious on some things, Was it whp or hp? Also what % difference is who to hp ? Isn’t it about 20% I have an open deck b18 Nippon rods and pistons my goal is 700hp crank, mainly a track car, but the occasional cruises

[@GearheadsAutofab]

Yes 670 and it was only limited because I couldn’t get it to make more boost on the dyno. Yes it’s wheel hp I only have a in ground roller dyno that test at the wheels. But all dyno numbers are very slightly so numbers are not super important. The biggest thing is that I cut the piston ring gap big and because the Nippon piston has lower compression it takes a bit more boost to make power, however it takes the pressure off the part of the block that usually cracks. So far I have lots of dyno testing and 3 track days on it and a little street driving and it’s still fresh and running grate. Also I made 450 on 93 pump gas and ran it at the track in 100 deg weather a it still didn’t break. I do think it’s the cheapest setup at this power level I’ve ever done. Car went 11:1 on 450hp on the hot day

[@rickyboostedhonda27]

@@GearheadsAutofabnice around what crank HP woke you say 670hp is in a B series ?

[@GearheadsAutofab]

Maybe like 730hp ….. people say it’s like 10 or 15% something like that

[@rickyboostedhonda27]

@@GearheadsAutofabwhat’s the most you think that setup can handle HP wise ? Could you make 750-800hp

[@GearheadsAutofab]

Yep I bet 800 is close to the limit

[@vuanvisions7404]

This a stock block de????

[@GearheadsAutofab]

Yep bone stock 2005 de

[@kingbey8405]

Are you in Texas? For some reasons i thought ive seen one of your videos you mentioned that youre local....lmao, @ 13min mark you just said it while i was typing 😂😂 DFW area?

[@GearheadsAutofab]

Ya the shop is in austin tx

[@kingbey8405]

@@GearheadsAutofab might head down there for a lil customization 🤣💯