Mark Henry

Engine build sheet for 3.0 1974 914 six conversion

Engine 3.0L, 70.4mm X 95mm, 10.1: 1 CR

Case, 1979, 3.0, serial # *6399XXX, 930/13, 930.101.104.4R, Supertec head studs
Crank, stock, std/std, polished and magnafluxed, converted to CW distributor drive gear
Rods, stock, rebuilt big and small end, new bushings, ARP bolts and nuts
Flywheel stock slightly lightened, with custom 914-901 adapter ring, CSP 228mm bus HD pressure plate
Full engine balance,
Main bearings, new glyco, DFL (Dry Film Lube) coated
#8 Main bearing, original Porsche, DFL coated
Rod bearings, new glyco, DFL coated
Intermediate shaft bearings, new Porsche, DFL coated
Gasket set, new nose and rear main seal, Supertec sealant kit
Pump, stock modified, cooler stock 911 modified to 914/6 spec, plans for front cooler.
Pistons, Mahle, new, 3.0 RSR style, DFL coated skirts, ceramic coated tops, Goetze rings
Cylinders, stock 3.0 nickasil, replated by Milenium/LN engineering, stock gaskets, .025mm base gasket
Heads, 3.0 big port, minor port work, twin plug, Ceramic chambers and exhaust ports, turbo covers drilled fins milled for clearance
Valves, stock size, exhaust new TRW sodium, intake new AE
Valve springs, Eibach street, retainers early stock, keepers stock modified
Cams, WEB-CAM, 120/104, set at 5.2mm/.10 lash, 964 cores modified to 901 spec sprockets
Towers, spray bars R&R, tapped and cleaned, rockers resurfaced, RSR rocker shaft seals
Chains, new IWIS race, new cam sprockets, keys and pins
Tensioners, hydraulic, Jerry Woods no fail modification
906 style stainless steel cylinder cooling deflectors
Cooler, stock, 3.0, modified for 914

Oil tank, DWD aluminum
Breather tank, Flatnines weber kit.

Carburetors, Weber 40mm IDA, rebuilt, new carb kits, 34mm venturies, 135 main jets, F3 emulsion tubes, 180 air correction, 55 idle, Ported stock manifolds, custom phenolic spacers.
K&N filters and rain hats, Weber linkage
Carter fuel pump, Malpassi fuel regulator

Distributor, PMS, twinplug
Ignition, MSD 6AL, twin MSD high vibration coils

911 Rod

Beautiful!
It's a shame to put in the car when you can admire it in the garage.

Mark Henry

That's how I felt about my mahle pistons.

Don't know the history on these, but I got them NIB, they have the RSR style top, but spec'ed out made for a stock 3.0 head chamber at 10:1cr. Real 3.0 RSR heads have a different chamber cc.
I believe they were made for someone's race program and these were destined for a stock head based back-up engine.
I had to get the cylinders re-plated as they were about .003" undersized compared to OE mahle's.

993GT

very nice, and going into a 914

BIG smoke

There is a cayman plexy engine cover available for bling. You need to design and build one for your 914? I would be a shame to tuck all that work out of sight...

Mark Henry

Aircooled, it would need holes for the air to get through the lid.

I have a GT lid, wire mesh, you can sort of see it through the screen.

The biggest letdown is I have this beautiful twin plug distributor, but once in the 914 all you can see is a bag of snakes coming from the top of the dizzy.
Rainhats on the carbs so you can't see the stacks, also you can't see the fan....sigh...

But on paper it spec's out at 250-280hp, so at least it should go like stink.
And sound like a Weber six

Imo000

Very nice indeed! Love the pistons.

Had no idea they can pull that much HP out of an old 3L N/A flat six.

puddy

Wow Mark, very nice! And should be a real weapon! i trust you've got your affairs in order ;P

Mark Henry

Funny thing is it's my wife I have to worry about, she's the one with the lead foot.

We've always had aircooled bugs, etc. with 2-3X stock (50) HP.
My 1967 beetle is a 180hp 2.6L T4, (102mm nickies, FI, 46mm ITB's, cam, 911 tranny, etc) in a 1700lb car. I think this will be a somewhat comparable power to weight ratio.

BTW she bought me the 914, for my birthday/fathers day she bought me new tires for the bug....you got to love a wife like that.

uniquenamehere

Looks awesome... is that an actual 914 engine? Or from a 911? I'm not up on my early aircooled...

Mark Henry

The 914/6 had a 69T 2.0 engine. Porsche sold the 914/6 from 1969 to 1972.

This is based on a '79 3.0 SC engine.
My 1974, 914 is not a "real" /6 it's a conversion, but all 914/4 's had the stamping's, cutout's, etc for the six engine. It's a real easy and common conversion.

The factory won the class and 6th overall at the 1970 Le Mans in a 914GT which IIRC was a 2.0 S engine.
This was the same race all the backgrounds were shot for Steve McQueen's movie.

Bit of trivia, the first F1 safety car was a 914 at Mosport in 1973.

Imo000

What was the last one?

theiceman

Mark do you have a full on shop ?

I think it would be an awesome Rennlist cruise to come out and visit. Especially those of us who attempt our own engine and car repair work. I might even wear my dilivar necklace I made.. it only cost me about 6 grand.

Mark Henry

I have a full on country shop, or some might call it a farm shop.

I do have enough property to host a show, if I bush hog the field behind my house I likely could do a 100 car show plus parking. Just my front and back yards I could do maybe 30 cars + parking.
Maybe in the future, I did a couple back 12+ years ago for the 914 and VW crowd but I can't afford to foot the whole bill. I can even do camping/weekend.
But it's a lot of work and I would need volunteers, sponsors, porta potty rental, insurance, etc, etc.

3 and 6 years ago I hosted 901, 911, 914 transmission clinics that were quite successful, everyone walked away with a rebuilt transmission. Thing is you can only do this with a 901 base tranny, as cores are quite cheap and often if you have 2 good cores you can make 1 good transmission. Plus spares are cheap enough you can have enough new parts on hand for the clinic.
You can't do this over a weekend for engines or 915 up transmissions.

Pags993

Would you consider Castrol as a sponsor for the event? sorry couldn't resist. Very nice work!!