420A internal build options?

[VelocitàPaola]

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[rc000e]

Looks like there is some room there. I have to wonder if it's really necessary or practical to place the turbo towards the driver side. That's going to add alot of cost and alot of runner volume, which is gonna make for some lag. It may be feasible if it were a topmount, but that'd be a pretty unorthodox design.

In that pic there, is that just a log with a somewhat topmounted flange? That's a kit I assume?

 

[Locke]

Most guys use a cast log with T3 flange with a slight angle downward, and wastegate flange angled upward. Star/Treadstone style.

Here is a knock-off:

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[VelocitàPaola]

Looks like there is some room there. I have to wonder if it's really necessary or practical to place the turbo towards the driver side. That's going to add alot of cost and alot of runner volume, which is gonna make for some lag. It may be feasible if it were a topmount, but that'd be a pretty unorthodox design.

In that pic there, is that just a log with a somewhat topmounted flange? That's a kit I assume?

No, it's not a kit. Everything was built specifically for this car.

The manifold is a basic log style, but the flange is actually aimed downward a little. Because of the dextral chirality of most turbos (as opposed to sinistral, I guess), the flange needs to be pointed downward for the thing to fit under the hood.

The 420A DSM wasn't built for a turbo, so there isn't a whole lot of room in front of the block... especially if you want a nice sweeping downpipe. If the turbo is centered on the head flange, any quality downpipe will likely interfere with the accessories. Furthermore, once you begin making bottom-mount manifolds, there becomes less room longitudinally as well.

I've been toying with several concepts for the while, and finally have something in the works. The A/C and PS get to stay, but the fans had to go... pushers are a requirement in this case. The turbo flange isn't completely offset, but somewhere between runners 3 & 4.

Of course, those are just my findings. You clearly know manifolds, so there might be a different way to do things.

 

[cs82685]

I understand you do fab work and that and more money spent on time than on parts is better, but if you go with a log style manifold for your customer (if they're not opposed) instead of custom building one, you can probably go with the forged internals. I know there are some gains to be had, but I still stand by the fact that the hahn car was running 10's on a log style manifold.

We know the pistons and rods are fairly capable -- pushing some as far as the low 11's in the 1/4 mile. Again, that's considering no detonation.

Who Paul? If you're referring to awddynamite, he was in the mid/low 12's on the stock bottom end and once he went with a forged block ran just shy of the 10 sec mark. If you're referring to others, I wanna know who because I wanna read about it

This reminds me, in a year or so when I have time/money I would like to see what I can push the stock bottom end to using MSnS I just wish it wasn't such a long way off.

 

[VelocitàPaola]

Who Paul? If you're referring to awddynamite, he was in the mid/low 12's on the stock bottom end and once he went with a forged block ran just shy of the 10 sec mark. If you're referring to others, I wanna know who because I wanna read about it

This reminds me, in a year or so when I have time/money I would like to see what I can push the stock bottom end to using MSnS I just wish it wasn't such a long way off.

Okay, I rescind my statement. I guess the stock internals have pushed some as far as the low 12's.

 

[Locke]

This reminds me, in a year or so when I have time/money I would like to see what I can push the stock bottom end to using MSnS I just wish it wasn't such a long way off.

I wish I could even vaguely forecast when I would have time/money.

Because of the dextral chirality of most turbos (as opposed to sinistral, I guess)[...]

Clue me in; as I'm not particularly turbo-savvy. Wouldn't that depend on a persons point of view, or is it commonly described from a view of a certain angle?


Antivernacularism (n.) - I just made that up. - The conscious use of superfluous language, which may confuse the average DSMtuners member.

 

[VelocitàPaola]

I couldn't really think of any way to describe it. The nautilus's shell is right-handed (dextral) no matter which way you look at it. Think about it this way, if the turbine outlet is facing you, then whichever way the inlet faces determines its chirality. I think for the most part they're dextral.

The same is should hold true for the compressor side.

 

[Locke]

Good enough for me.

 

[cs82685]

I wish I could even vaguely forecast when I would have time/money.

Unfortunately all it is is a vague forecast.

 

[Slo2gen]

http://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=101224&mode=full

It speaks for itself.

 

[VelocitàPaola]

I think Corbin's project shows exactly why a top-mount isn't the best approach. No offense, he always has great ideas, but the angles involved with that setup are horrendous.

 

[rc000e]

Well, I must say, this is getting my a bit excited. I love getting into something new, where I can maybe put a new spin on things.

This here:

http://forums.2gnt.com/dcboard.php?a...1224&mode=full

It speaks for itself.

This definitely does speak many words, but I'm just gonna

I guess what it's gonna come down to is, "we're just gonna have to see what we'll see...won't we" [Under Seige, stated to Casey Reiback in the galley]

 

[Slippi84]

There is a guy with a long route, equal length I'm pretty sure, top mount manifold on 2gnt.com forums who was able to keep everything amd it looked pretty good too but you needed to use slim fans or a simmer radiator I think or put the fans on the other side I think that was it. The reason to point the turbo toward the driver side is the ac compressor is in the way of the the dp location otherwise.

 

[VelocitàPaola]

There is a guy with a long route, equal length I'm pretty sure, top mount manifold on 2gnt.com forums who was able to keep everything amd it looked pretty good too but you needed to use slim fans or a simmer radiator I think or put the fans on the other side I think that was it. The reason to point the turbo toward the driver side is the ac compressor is in the way of the the dp location otherwise.

Who are you talking about? The only person that fits that description is Corbin... the guy who started the thread posted above.

 

[Slippi84]

Who are you talking about? The only person that fits that description is Corbin... the guy who started the thread posted above.

Yeah that's his name I didn't see his pics that I saw before in that thread posted above so I didn't knwo if it was the same guy.