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Random 3/s Coop idea

Posted: Mon Oct 08, 2018 3:25 pm
by DCIV
Stupid crazy idea popped into my head. Flip around the head on a 3/s. Prob have to have custom cams. But then let the exhaust come out in the middle. Feed a huge single over the trans. To a fmic and then to two TB that feed each end independent. Bam. No having tons of exhaust piping to make a single work.


Tell me how I’m wrong. Or tell me how it could work. Your choice. Never gonna do it. Just a thought.


Coop

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 3:32 pm
by ChargerX3
That head will need a LOT of work. Then what are you going to do for intakes?

Image

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 3:34 pm
by Chris GTO TT
So basically trying to make a hot V style engine?

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 4:04 pm
by DCIV
[quote=""ChargerX3""]That head will need a LOT of work. Then what are you going to do for intakes?

Image[/quote]

The intake would be a single in intercooler to a two out and two TB’s prob electric. Or split up after it comes up the opening and split.

The heads are reversible so I’m sure it all would work minis figuring out how the timing would have to work. But I’m sure it could. Was just seeing how crazy of idea it is.

[quote=""Chris GTO TT""]So basically trying to make a hot V style engine?[/quote]

Yes. Well not trying just had the idea and wanted to share.

Coop

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 5:42 pm
by mjannusch
The heads aren't reversible.

Even if they were, that would be a crazy amount of heat in a very confined space between the heads. Trading exhaust complexity for intake complexity. Not sure that's a good trade.

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 5:46 pm
by DCIV
[quote=""mjannusch""]The heads aren't reversible.

Even if they were, that would be a crazy amount of heat in a very confined space between the heads. Trading exhaust complexity for intake complexity. Not sure that's a good trade.[/quote]

Why arnt they reversible? Been a while since I had a head off but I’m pretty sure it looks the same?

Yes obvious flaws in my thinking...so is putting a single on a 3/s. (IMO). Don’t think about the heat. Think if it could work.


Coop

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 5:54 pm
by mjannusch
Well, look at the headgasket that Steve posted. It isn't a symmetrical gasket - the coolant and oil passages are sort of all over the place and oddly shaped.

Could it work? Yes. Is it worth exploring because of the obstacles? No.

If you move your intakes to the outside of the heads, you also need to move fuel rails down there, have some sort of intake plenum on each side, dual throttle bodies that have to be synchronized, shitloads of heat to deal with (in an area that's adjacent to your timing belt)...

I'm just not seeing it.

If you want a single, better bet is likely to do a 4G swap. Then you don't have to do any of the crazy work-arounds, and you get a lot cheaper parts to play with and more room to fit it all in.

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 5:59 pm
by DCIV
[quote=""mjannusch""]Well, look at the headgasket that Steve posted. It isn't a symmetrical gasket - the coolant and oil passages are sort of all over the place and oddly shaped.

Could it work? Yes. Is it worth exploring because of the obstacles? No.

If you move your intakes to the outside of the heads, you also need to move fuel rails down there, have some sort of intake plenum on each side, dual throttle bodies that have to be synchronized, shitloads of heat to deal with (in an area that's adjacent to your timing belt)...

I'm just not seeing it.

If you want a single, better bet is likely to do a 4G swap. Then you don't have to do any of the crazy work-arounds, and you get a lot cheaper parts to play with and more room to fit it all in.[/quote]

I don’t want a single. I just can’t help these thoughts that come into my head. lol.

Yup a duel feed to an fuel rail would be needed. Didn’t think of that. And totally the intake would be more a pain then it is now. Lol.


Coop

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 6:12 pm
by DCIV
And I’m 99% sure the heads are switchable. I thought I did it but obviously the intake and exhaust ports wouldn’t be the same. So no I didn’t. Hmmmmm.

Coop

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 6:16 pm
by aaronatstate
[quote=""DCIV""]And I’m 99% sure the heads are switchable as I think I did it because of a bolt that broke off in one. Now I want to know if they are rotatable.


Coop[/quote]

They are reversible between banks, but not reversible on one bank, i.e. you can put the front head on the rear bank, but you can't just turn the front head 180° and put it back on the front bank. All V-engines are setup this way.

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 6:24 pm
by vr4
[quote=""mjannusch""]The heads aren't reversible.

Even if they were, that would be a crazy amount of heat in a very confined space between the heads. Trading exhaust complexity for intake complexity. Not sure that's a good trade.[/quote]

They are. As Aaron said the heads are the same casting so they could be swapped in theory.

As for the heat... Other than knock sensor I don't see a problem. It's been done with both gas and Diesel. Ford 6.7 is. I'm pretty sure some vw and BMW are too.

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 8:15 pm
by ChargerX3
[quote=""aaronatstate""]They are reversible between banks, but not reversible on one bank, i.e. you can put the front head on the rear bank, but you can't just turn the front head 180° and put it back on the front bank. All V-engines are setup this way.[/quote]

Bingo, heads wont mount upside down (180 deg) on the block.

Re: Random 3/s Coop idea

Posted: Mon Oct 08, 2018 8:32 pm
by vr4
[quote=""ChargerX3""]Bingo, heads wont mount upside down (180 deg) on the block.[/quote]

Derp. Right. Don't know why I couldn't picture this