MORE TORQUE

rocklord":3vqht484 said:
I need a bit of clarification. Some of the numbers I'm finding don't match up to yours.... Am I looking at the wrong VW bearings?

I'm not trying to be adversarial, I'm just trying to wrap my head around the numbers and make them work.

Yes, the Bearing size is 45.949-45.974mm for 1976-1980 1.471 Diesel, but 47.758-47.778mm for 1980-1984 1.588 Diesel. 136 mm rod. Can't remember the wrist pin for the diesel.

But the performance Aussie engine builders use Golf/Passat diesel rods in Holden's,or either type, 1.5 or 1.6 litre.

Best option is custom Ford Kent/BDA/Pinto rod with smaller crank journal, but I think there is an off the shelf 2T/3T Toyota rod around if you hunt for it. 1.889" rod bearing (47.981mm journal size. .... TOYOTA 2T 3T, or also called the 12T,13T, the OHV 8V 70-82 and DOHC 70-85 engine) 123mm centre spacing, or 4.84" before resizing, with a bullet proof 22mm Holden/BMW/Datsun 0.866" wrist/gudgeon pin .

That results in a 1.444:1 rod ratio with 3.35" stroke with the Toyota 4.84" rod,but custom rods are around which are longer to suit the Formula Pacific and Toyota Formula 3 engines. Ford BDA and Toyota twin cam engines are close enough in size so that aftermarket suppliers for H or I beam forged rods will be able to use there cores to make specials on Audi, Toyota, Honda or Holden bearing sizes. Except for Carillo, which don't make forged steel or H section rods below 5.375" centres.

Finding 4.724-5.00 inch (120 to 127 mm) rods is like finding 3.630- 3.740 (92.2 to sub 95mm) pistons... a freeking nightmare!

There are standard rods which use a stock nominal 48 mm Holden, Toyota or VW-Audi bearings (about 1.875 to 1.900"). With repect to VW-Audi Group (VAG). The internet creates the problem. I think 1.7 liter 1716 cc VW-Audi engines were used in 1979-1981 Dodge Ominis, and along with Porsche and LT Truck VWs, and five generations of Golf-Jetta/(nee Rabbit) versions, often with the same capacity of the superseaded ones. 5 cylinder versions of the Rabbit engines then used 4 cylinder parts as two liter , 2144 or 2226 engines, but the diesel was based on the gasoline engine.

The Holden rod journal is for the Holden 4.08" bore centre L6/L4 engine, made from 1963 to 1988,and variously called Red/Blue/Black/XT5/XT6/Starfire/Phase 2 and 3 engines, 1-X Toyota engines, 1892 cc as 4-cyl, 2850 cc,3300 cc, then 138/149/161/173/179/186/202. Gotta get the right one from the ACL catalogue.

Ideal rod is
1.9" nominal rod journal,(48.26 mm)
0.866" small end, (22mm)
4.926" centre to centre (125.1 mm),
and can be custom made, or resized from a Ford based blank.JUN, Carillo, Iapel and others make custom ones, but Toyota has some standard production rods which do the trick. Unlike US Car parts, the Germans and Japanese don't publish there rod dimensions in imperial.

All Toyota engines had OHV and DOHC versions on the same bore spacing engine. I think the 1970-1983 2T/3T 1587cc and 1770cc rods as per single cam OHV T18 Corolla/Corona/Celica and its twin cam 8 valve variant are 123 mm, have a 48 mm rod journal and a 21 mm small end. One of the related 18/22r bore spacing 1,2,3 and 4Y ohv series and S series Toyota 1629/1812/[early sohc was 1974]1998/ and 2.2 single and double OHC engines have a similar rod dimensions to the 2T/3T (1s~,2s~, 3s~,4s~)

The Volkswagen-Audi group rods have had huge changes over the years. The right rod journal is the Australian Diesel version of the Golf/Rabbit/Fox/5000/5E engine, a 1471 or 1588 cc engine which has a rod which is able to be put into a Holden 4.08" bore centre L6. At about 5.35" long, but its got the right rod journal to offset grind. Its got an almost 1" wrist pin, but it can be bushed.

Yes, all 957 to 1593 cc Kent four cylinders run Falcon six size bearings, and are 226 thou too big. Size is about 4.926", for the later Heron headed X-flow 1600. It has a smaller wrist pin

All small four cylinder OHC Pinto rods, 1294/1593/1.8/1993, are about 2.05",or 150 thou too big. 4.96"
 
Thanks xctasy.

Looked on ACL's website and got the specs on the Holden 202 conrod bearings.

I'm sure if one found a set of unmolested Kent 2737E rods, the big end could be resized to fit the 202 bearings.

I did find a cheaper piston the may work for the stroker. The piston for the Jeep/Chrysler OHC 4.7L is a 94mm (1mm oversize) flat top with a compression height of 1.24" and a pin diameter of 0.946". Around $24US apiece.

Shave the top of the piston to get zero deck height, resize the Kent rod to accept the larger pin, and it would give you a 215 displacement.
 
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