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Mediocre at Cresst - now with nsfw autophilia


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#341 LUMBERZACK

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Posted 24 June 2018 - 06:24 AM

And if any of you have been living under a rock and need an article about twin scroll to read about, here's a 101 I found on Google in 0.49 seconds. Also there are 4,500,000 other search results on Google if you want to review more research and development statistical data.

http://www.superstre...-system-design/

Better yet, don't even try understanding twin scroll. Stick to log manifolds, aggressive cams and port and polishing your heads in attempt to get that Trust TD-06 to spool at 5000rpm. Worked in the 90's, should still work today right?



#342 Gordo

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Posted 24 June 2018 - 08:15 AM

Most problems associated with poor spooling on a Trust turbo was from people using the wrong one.

Trust (Mitsubishi) sized their turbine housings by the area of the slot that fed the wheel.

All their housings had a number cast just inside the flange, and if you didn't pay attention to what housing you had, you got poor spool up.

Fuck, my T88 would spool at 5k...

 

Besides, most turbo engines are meant to make way more power than what was possible NA, not just equal to what a built NA could make.

Glad your satisfied with the 350-450 your 1Js make, after you go through all that work.

Glad you realize your limitations.

A well built 1JZ should be capable of the 800+ that well built 7MGTE street engines make.

 

But you may be too young to remember any of this....Or you just don't know how to use a clutch.


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#343 BoristheCat

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Posted 24 June 2018 - 09:27 AM

zEhbbul.jpg

 

Didn't know squat about twin scroll stuff until I read that article... the exhaust pulse logic makes total sense though


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#344 battleaxe

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Posted 24 June 2018 - 04:50 PM

alls i knows is, my car does a burny skid at whatever rpm. im no wizard.

and theres really cool turbo tech that can alter these same spool characteristics. spectrum motorsports has been doing this for quite some time. making ok turbos fuckin magic.  single 44 does exactly what i need it to do. i just see dual gates on non divided turbos and manifolds and see it so often on JZs i had to ask. what youre doing will totally work, but to me its just more gates and more plumbing for something thats already going to be sick.

lets not do this jz/m motor thing, who cares. theyre both capable of doing burnies and doing a skid, or a drag thing or whatever. 



#345 Jacob

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Posted 25 June 2018 - 04:16 AM

I was going off a dusty conversation with an old member here and some grasping at straws of common sense.

The current internet says exhaust pulses are better maintained. V8 has that as a disadvantage. Tt actually fucks it's pulses up. But an inline 4-6 gets divided into 2 smaller-motor pulses.

2 smaller gates also regulate low and high boost pressure better (no boost creep). Drag racing seems to like not using 35psi out of the hole.

Response is better overall. I doubt we are talking about response that matters to hipster fucktard trying their best to mismatch body panels and pick them stickers.
No.

#346 Demesio

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Posted 25 June 2018 - 05:22 AM

It's just a conspiracy to get people to buy more wastegates, you fools all ate it up...



#347 LUMBERZACK

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Posted 19 July 2018 - 08:31 AM

Been having a great time driving the Cressida around. Thrashing it. Taking it to car shows and eavesdropping on people's commentary of the car from a distance.

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So when shit is working right and you're having a great time with it, what's the best thing to do? Tear it apart of course.
Getting ready to pull the engine to install my OS Giken clutch, Single Turbo conversion, X7 steering rack conversion, paint the bay, maintenance and overall cleaning up of hoses/wires/ engine bay clutter. Since I wasn't sure how the swap was going to turn out, I didn't go all out in a lot of areas, so now I want to get in there and take care of some stuff I half-assed to get it running. I'll probably have the engine pulled this weekend. I just ordered all my aforementioned parts this week so I have some waiting to do. Plus I'm still waiting on my manifold.


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#348 LUMBERZACK

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Posted 19 July 2018 - 08:40 AM

I drove down to FutureFab to pick up a T4 manifold flange that they use on their manifolds. I wanted to match it to my turbine housing. You can tell in the picture, the S200 series turbine housings appear to have a T3 opening on a T4 flange. Goofy, but it seems to work for a lot of people so fuck it. Many of my friends that I have asked had told me that they left the turbine housing alone and did not port match the turbo to the manifold flange. physically I'd probably be okay doing that, but for mental peace I think I'll spend the extra hour with a carbide bit and do a shallow taper just enough to shave down the ledge to more of a 45 degree angle to slightly help with exhaust merging. It may not grant me a noticeable difference, but I'll sleep better at night knowing I tried.

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#349 BoristheCat

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Posted 19 July 2018 - 11:01 AM

I'll be judging you hard on how your wiring tuck turns out.

 

Ditch your AC to make your bay look better.  Then only drive your car in sub 90 degree Arizona temperatures.

 

Engine bay swag or nothing.


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#350 Gordo

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Posted 19 July 2018 - 02:47 PM

Yup, that flange sucks.......

Would not even consider grinding on the turbo, unless it was only a millimeter.

Return that pos, and send them a tracing of what you need,

or just go find a shop that has a laser, or water jet, and have the correct one made yourself.

Better yet have 10 made, and sell to other S200 wana-bees.


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#351 LUMBERZACK

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Posted 20 July 2018 - 07:04 AM

I probably won't tuck and rebuild the harness until I buy a standalone ECU. Swaps with no A/C is lazy imo. It's the extra mile that speaks volumes.
 



#352 BoristheCat

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Posted 20 July 2018 - 09:29 AM

I ditched the AC because I wanted a cleaner engine bay, not because I was afraid of dealing with it. 

 

You need it in the Arizona heat, but I don't really need it.  It rarely gets above 85 in the summer up here.


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#353 LUMBERZACK

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Posted 20 July 2018 - 01:30 PM

Yes, it is currently 114 degrees. lol. I'm not looking forward to pulling the engine in this weather.



#354 Gordo

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Posted 20 July 2018 - 01:41 PM

103 here, no AC in the Datsun truck, thought I had it bad.

114 ?

I feel much cooler now.....

 

I try to do things after 2am, but before 10am.


Prefixes for 'Gordo'
 口 Holy Shit  
口That ass hole,  
口The Magnificant  
口That old fart,  
口The infamous  
口That crazy  
口That 7M guy,   
 
Best JZXP statement:
Jacob - "We're all fucked. We'll be comparing everything to a Japanese taxi for the rest of our lives."

 


#355 BoristheCat

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Posted 20 July 2018 - 07:33 PM

At least Arizona is dry heat. I visited family in Corpus Christi as a kid in the summer and my god, the humidity is brutal. I like Texas though, San Antonio is nice when it's not stupid hot. Plus real estate isn't expensive as hell like Seattle.

I agree with gordo. I would rather grind on a cheap flange than an expensive turbo. lol

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