Printable Version of Topic

Posted by: oldschool Sep 28 2016, 10:38 AM

who is the member that has a turbo 4 ?

Posted by: Rand Sep 28 2016, 11:03 AM

There are a few. This might be the one you are thinking of:
http://www.914world.com/bbs2/index.php?showtopic=65883

McMark is running one.

Posted by: ConeDodger Sep 28 2016, 11:11 AM

McMark practically daily drives his...

Posted by: McMark Sep 28 2016, 11:17 AM

My Turbo 1.7. Here's my thread about the car, link jumps to the turbo info: http://www.914world.com/bbs2/index.php?showtopic=211954&st=100


Turbo 2.4 I built.

Posted by: Mueller Sep 28 2016, 11:24 AM

Your second picture confuses me Mark

Posted by: McMark Sep 28 2016, 11:44 AM

Because I was wrong and it's actually a 2576 (2.6l) engine? How can you tell?

Or because it's got carbs on it? Those were for break in.

Here's some more pics, and a link to http://www.914world.com/bbs2/index.php?showtopic=216359


Attached image(s)

Posted by: matthepcat Sep 28 2016, 11:47 AM

This was a really nice high dollar build for sale...and never sold.


http://www.914world.com/bbs2/index.php?showtopic=257971&hl=


I think he still has it.

Posted by: McMark Sep 28 2016, 11:49 AM

Yup, he decided to keep it.

Posted by: Elliot Cannon Sep 28 2016, 11:54 AM

Everyone knows you can't turbo a 914. McMark has proven everyone wrong.

Posted by: oldschool Sep 28 2016, 12:26 PM

Thanks McMark and all that posted I'll PM you soon.

Posted by: nein14 Sep 28 2016, 12:38 PM

You can't Turbo a 914


Attached thumbnail(s)


Attached image(s)

Posted by: Mueller Sep 28 2016, 03:32 PM

Heck, you cannot even run matching wheels!

Posted by: rtalich Sep 28 2016, 05:39 PM

Yup. Still have it.

Posted by: nein14 Sep 28 2016, 07:51 PM

Nope

Posted by: ottox914 Sep 28 2016, 09:27 PM

You CAN as long as you don't let friends drive it.

(see signature links)

Posted by: Porschef Sep 29 2016, 04:24 AM

Friends don't ask friends if'n they they can drive their 914...

Posted by: ConeDodger Sep 29 2016, 11:29 AM

Attached image(s)

Posted by: Kansas 914 Sep 29 2016, 11:33 AM

Posted by: get off my lawn Oct 5 2016, 05:57 PM

You can't turbo a 914, or at least you couldn't 16 years ago.




Attached image(s)

Posted by: veekry9 Oct 6 2016, 12:42 PM

A twinturbo might have a small advantage in low rpm response.
Short 316 ss headers to a pair of quick spooling turbines.
A modern approach,with all the bells and whistles,water/fuel direct injection.
Roller tip rockers and lifters,a winder,and some durability built in.
When a ember is given more air,it will burn faster,hotter,and will melt a stock head.
Heat management is a considerable task,as a seat will pop out without due diligence.
A heat sink,strategically inserted into the T4 head to direct the heat to a channel of smaller resistance to conduction.
Being cool is also insulating the chamber and ex-port from the heat,modern machined and coated ceramics.
The limiting factor is the mass of the head and it's ability to lose heat,without losing strength.
More power,more air,more cooling,the circular unconditional loop.

Something like this,but with a type 4,auxiliary head cooling via oil/water/glycol.
https://www.youtube.com/watch?v=-HltZrFGJ4U

Easy to blow the heads off the flat four,a real careful build can keep it together.
/

Posted by: Mueller Oct 6 2016, 03:49 PM

That the Harley Davidson patent drawing?

Amazing how small the water channels are on those yet I think it allowed a full point of compression increase.

Posted by: veekry9 Oct 6 2016, 04:43 PM

cfd,fea,now with cooling loop,about M8,bigger is better.
The flow rates keep the seat cool,so,a similar tubular coolant path around the ex-port will allow heat to be soaked away.
There is room there under the port for such a tube,the sizing at the minimum,the shape a smooth curve,turbulence free.


/