RB25DET'd 280Z Header Pic

[240Z TwinTurbo]

Finally got the header started for this project. All 321SS using a double slip 6:1 merge collector. Will have pics of the header piping in a few days. Just ran the 1st pipe to mock the turbo position and will begin to run the remaining 5 tubes. This should be interesting when complete.BTW, do you like my new signature? Took the car to the track Friday night with my new powerglide transmission swap. Not bad for an old school Datsun with a 280zxt motor in it and drag radials! Track results below.

Run 160ft - 1.7721/8 - 7.051MPH - 106.281/4 - 10.75MPH - 133.8

Run 260ft - 1.8081/8 - 6.939MPH - 106.911/4 - 10.624MPH - 134.15

[BoostFab]

wow, i like to see the pic of the collector

[DSMs_Suck]

Looking good!

[frosted flakes]

wow how much HP you pushin?

[DETurbine]

what do you have done to the RB25? (any internals?....head work?..etc...). What turbo do you have on it?

[240Z TwinTurbo]

One more tube to run and then plumb the HKS GT(60mm) wastegate.

[JonPowell]

That is absolutely amazing!

Great job, I am in awe!

[NISMO_RB25]

I bow down to your welding ability

That is one crazy setup. I spent all day welding and grinding, just to reconnect the flange to my dp.

[DETurbine]

I don't understand.....you are doing a manifold for this project...and still not done with it?...but you ran a 10.62 on it?....or are you talking about the 240z with the L6 twin turbo that you have?

[BoostFab]

wow, taht is absolutely wild....it reminds me of the sidewinder by hytech.

[wawazat8402]

I love where it places the turbo. Are you planning on making custom manis or is that your last one? It looks awesome!

[240Z TwinTurbo]

I don't understand.....you are doing a manifold for this project...and still not done with it?...but you ran a 10.62 on it?....or are you talking about the 240z with the L6 twin turbo that you have?

Correct, that was my old school 240Z with the 280zxt motor in it(check my signature). The current car I am working on should run close to 140mph.

[240Z TwinTurbo]

I love where it places the turbo. Are you planning on making custom manis or is that your last one? It looks awesome!

Don't want to reproduce them, as there are variables that can cause a manifold not to fit. I can do more, but I require the car to be with me. I have one more tube to go and have about 10hrs in the manifold thus far. However, two of those were spent milling the recesses in the flange so the tubes can set .150 into the flange before welding. This provides a stronger joint. The turbo will also be braced to the block to stop vibration and to take the load away from the tubes.

[420_240]

that's just friggin' bad arse.....

[DSMs_Suck]

having trouble making out the flange... u going straight t4?

[240Z TwinTurbo]

having trouble making out the flange... u going straight t4?

Correct, Big Kahuna turbo that I sell with p-trim .58. Setup should generate atleast 550hp@wheels on stock longblock(~20psi).
Modified by 240Z TwinTurbo at 8:50 PM 10/13/2004

[Dano]

that manifold is just amazing, u should put that in a glass case on the mantle!

-Dan

[240Z TwinTurbo]

I ran the final tube last night. However, it was done at my buddies shop and when I did the fit on the car it is too close to the valve cover. No worries, chopped off the tube and rotated it away from the valve cover for clearance and I will rerun the short piece I cut out this weekend. Cut the front of the intake plenum to angle the TB correctly before I weld on the TB plate and finally mounted the intercooler permanently. Can now run the IC piping.

[wawazat8402]

That just looks flat-out amazing! I wish you were closer and i would definitely nag you to build one for me! I noticed you removed the line that runs from the top of the valve covers to the intake. The one that hooks up to what i guess are for oil overflow. Does that affect anything bc i really dont like the thought of oil feeding into my intake.

[BoostFab]

i really dont like the thought of oil feeding into my intake.

you would need an oil catch can.

[240Z TwinTurbo]

I noticed you removed the line that runs from the top of the valve covers to the intake. The one that hooks up to what i guess are for oil overflow. Does that affect anything bc i really dont like the thought of oil feeding into my intake.

Not yet hooked up. It will run to a catch can that is plumbed to the inlet of the turbo. This will create a vacuum on the block under boost, but no allow the turbo to suck in oil. The catch can drains back into the block through a one way check valve(PCV).

[Sil240]

nice !!!!!

[IvoryJ30t]

WOW!! nice work.

i wish i could weld like that. i just burn through and make puddles.

i usually tack weld whatever and take it to someone who knows what there doing...