Here are some pics from my forged engine build from another forum.

The end result is an engine with compression ratio of 8.5:1 from 10:1

The pistons were custom forged to match each individual bore.

Rods are from the 6G74 (Magna/Diamante) they are the same.

Crankshaft was nitride treated and bearing shells replaced with harder materials.

Whole lot was balanced.

Am driving it around now with a supercharger at 7.5 psi.

The aim is to increase boost to 12 psi.

The car runs Propane as it's primary fuel, with an ECU switch to gasoline when power demands it.

Hope you enjoy the pics and get some inspiration.

The engine is deemed bullet proof.

Some photos of the machine shop doing my rebuild.
The guys are the owners of Engineworx In Australia.
This appears to be the first 6G75 forged build.



the man

the other man

6g75 sump showing baffles

more of the same


the block, no lip which is great

another view of the block

heads

another heads pic

old pistons etc, still perfectly serviceable.

oil pump mechanism

old and new piston comparison

another old and new comparison

The bolts are stamped ARP

 

kit of bits


another kit view, rings etc...rings are cast by the way, as per the stock rings

note the new rod's busihing, the pin is tapered inside to reduce weight.

Pauter logo



note the massive improvement in material mass



more ring views


rods again


where do you get it?

 

Here is the engine bay with the completed engine and supercharger
(The forged 6G75 is a spare engine, the original engine which still has 8 years warranty left is on the shelf....)

Note the Sprintex supercharger at the rear next to firewall...
Will be going from 7.5 psi to 12 psi as soon as a bit of engine running in has occurred....






Work done.....
-pistons custom made by SPS forgeing company in Australia.
-rods from the US..."Pauter" brand
-arp rod bolts
-nitride treatment on crankshaft
-CNC heavy duty bearing shell
-balancing by removing crank material,replacing with heavier mass dowel
-head port and polish
-cams untouched
-stock head gasket
-8.5 static compression ratio
-sump gaskets,etc...stock
-cast rings supplied by pauter
-no rebore, measurement of each bore and custom piston each cylinder.
-light hone, engine had only done 25k miles out of a wreck.

 

Holy ****. Post more pictures!

 

Now running 12 psi boost...smaller supercharger pulley fitted.

315 hp at the wheels...(6000 rpm)

 

Number #2 forged engine is nearly completed...