Flat 8 ? I've seen pics of the Lind one, how about a running one here! Options

[Mueller]

HaHa,
This is an ongoing work in progress toward F8 perfection.When you say layers,I suppose you mean Cad.
Not cad,these are the GM drawings that I've modified to make 8,in Gimp.
Cleaned up the photocopy,scaled and rotated,hours of fun.Then modded and dimensioned.
A twin cam VVT is in the works as a reasonable compromise,the heads are the toughest job. (IMG:style_emoticons/default/biggrin.gif)
Watercooled canted 4 valve,pushrod,a kiss approach.

Where to get them.20+ years they've been posted.
[
SOHC 2.9L

That SOHC motor is pretty looking engine!

I've rebuilt a Lycoming, never touched a Corvair motor....


Below...anothe pic of the Jabiru motor, I didn't see this pic in your other threads...



I know pic below is a 6 cylinder, but I'd imagine they made the 8 the same way...




http://contrails.free.fr/engine_jab_inside_en.php

[veekry9]

Bulletproof cases in wrought material,pricey,tho just what you need for a big bore short stroke flat 8.
A high level of customization is possible with this approach,a one off custom.



What the Corvair-8 case looks like in gimp.Pretty huh?A simple approach.Cut and weld.

[veekry9]

Aero diesel,in a flat v configuration.
http://eps.aero/the-eps-engine/
Appears to have good prospects.



Corvair-8-VVT-TC

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[veekry9]

http://www.engineswapdepot.com/?p=5104
Ah,the madness.This is so..awesome.
This crankcase is steel!Probably to test layout of 120* Vee angle of the cylinder banks.

[Mueller]

I forget what I was searching for last night, google had this one pop up...

http://www.alfabb.com/bb/forums/boxer-engi...-8-project.html


A flat 8 made from 2 flat 4 motors.


I didn't know Alfa made a horizontal motor!

[r_towle]

Forgot what you were searching for so "flat 8 " motor is your default?

[veekry9]

Jurgen Barth May 24 1980 Porsche 908/80 2.1L-6 Turbo.
2nd overall at LeMans,a podium finish,Ickx,Joest and Leclere .
https://www.google.ca/search?q=1980+24+Hour...IrR9fShVhuLM%3A

So,a liquid cooled flat 8 is your quest,and you have a few spare Subaru 3.0 H6s laying around gathering dust.
https://www.google.ca/search?q=subaru+3.0L+...SgA&dpr=1.5
http://blog.perrinperformance.com/perrin-h6-build-up/
This then is the plan,as before,a cut and weld operation.Such an effort requires the skills of talented welders and machinists.

http://www.strobotics.com/index.htm
https://www.google.ca/search?q=robotic+arm+...+axis+deburring
(Mounting the two cases in an indexed position,the arm,with an air die-grinder and vee tool will cut the cases in an identical,mating method.
A weld prep and section that positions the two case ends longitudinally +/- 0.25mm,0.01",perfectly.A series of small tacking welds to stitch-weld the groove.
This is far superior than filling a 1/4" sawn gap and the greater shrinkage with it,this is a minimum weld volume,enabling a close control of distortion.
After all,you would want to make another after the first one,exactly the same,or a new improved weld groove.)

Titanium and inconel valves,as a twin turboed variant is,after all,so hot.The billet crank is the main ingredient,held by the lightweight rods.
None of this is cheap,and the effort would be wasted by a weak approach.A reliable fuel control is essential,so,no sneezing,and it won't burn a piston.
A shortstroke < 4L engine would hang together long enough to impress,using a welded crank and steel rods is about the lowest cost option,rev limited.

Now,what to put it in,a 914 roadster,as above,with the snorkel and wing.
(IMG:style_emoticons/default/happy11.gif)
(IMG:style_emoticons/default/evilgrin.gif)
https://www.google.ca/search?q=porsche+boxs...RK6BQoQ_AUIBigB
https://www.google.ca/search?q=porsche+boxs...neJlg3UBSXfM%3A

Hmmm...
(IMG:style_emoticons/default/idea.gif)
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https://www.youtube.com/watch?v=Q0WwqYAv4Qw
https://www.youtube.com/watch?v=x-yX_kmcQrg


http://www.racingsportscars.com/type/photo...he/908__80.html
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https://books.google.ca/books?id=RQzeqWTBaT...rbo&f=false

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[veekry9]

914-8,From the book,'67-8.

http://www.914world.com/bbs2/index.php?sho...=24992&st=0


https://www.youtube.com/watch?v=NHIBPb2zkIc

https://www.youtube.com/watch?v=klptXsXwCjI

Loud eight noises,er,music.

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[r_towle]

@Mueller are you still on the board?

Did you find anyone making cases or cranks?

I am close to starting up this project
Mill and lathe here, just getting them hooked up.

[SirAndy]

@Mueller are you still on the board?

Did you find anyone making cases or cranks?

I am close to starting up this project
Mill and lathe here, just getting them hooked up.

I still think copying the original flat /12 design with the center supported crank could work for two stock /4 cranks welded together.

You need to eliminate the tendency of the crank to want to bend in the center under torque.

It was also bloody brilliant to run the fan in the center straight off gears on the crank.

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.stuttcars.com-179-1675033228.1.jpeg)

[930cabman]

(IMG:style_emoticons/default/beer.gif) (IMG:style_emoticons/default/beer.gif)

[r_towle]

Umm,

I need my 914 to sound like this
It’s what drives me on this quest.

https://m.youtube.com/watch?v=tXKcpbFF7WI

[r_towle]

Anyone have more info on the Lind motor?
I have met a cousin of my wife who is a vw nut and lives in Sweden.
I want to see if we can track down the motor.

Any articles or folklore, myth or clues ????

[r_towle]

@Mueller are you still on the board?

Did you find anyone making cases or cranks?

I am close to starting up this project
Mill and lathe here, just getting them hooked up.

I still think copying the original flat /12 design with the center supported crank could work for two stock /4 cranks welded together.

You need to eliminate the tendency of the crank to want to bend in the center under torque.

It was also bloody brilliant to run the fan in the center straight off gears on the crank.

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.stuttcars.com-179-1675033228.1.jpeg)

Two points,

When cutting the case to do this, you are left with two main journals next to each other…I don’t think bending could happen at that point.

The fan…
I’m intending on a horizontal fan, and I found some high speed 90 degree transmission I can use from a pulley at the front to a shaft mounted fan.

Now, I did see @Cairo post a new fan shroud on some other thread somewhere….I want to see who he got that from…make it a bit longer