I have a few questions and observations. Apart from the conversion to direct injection. I would be very interested to know what other modifications the Indians have done to the original CS design to be able to extract 18 BHP from this engine (the original Lister CS started life with just 5 BHP).
Clearly the Indian design has increased bore and stroke, but to cope with the increased stresses that direct injection (when compared to the original Lister CS indirect injection engine) places on the wrist pin and big end bearing journals it would be interesting to know if these have been increased in diameter from the original Lister dimensions (wrist pin 1.25" diameter, big end 2.5" diameter).
Also are the main bearings on a white metal bush or a taper roller bearing arrangement?
It is also interesting to note the other changes the Indians have made to the cylinder block. The water jacket inspection plates now seem to not be present, no doubt a cost reduction measure very similar with the last of the original Lister 8/1 and 16/2 engines, except that Lister engines used core plugs in place of the water jacket inspection plates.
Also knowing the problems experienced in the past with head gaskets, it will be interesting to see what happens with this engine, as it is a 4 bolt head, and presumably the increase in bore size has had the effect of reducing the sealing area of the head gasket.
The design of the direct injection cylinder head is interesting, does this Indian cylinder head rely upon a shrouded inlet valve to promote turbulence?
However, the conversion of Lister CS engines to direct injection is not a new Indian development. Listers and Ruston Hornsby were experimenting with this feature in the 1930's, see these threads:
http://www.stationary-engine.net/forum/showthread.php?t=39220http://www.stationary-engine.net/forum/showthread.php?t=39519The results of this experimentation then led to the design of this Ruston Hornsby engine (Lister and Ruston Hornsby were briefly in collaboration at this point in time) :
http://www.ebay.com/itm/Ruston-VRH-VRHL-VRHN-VRHZ-3-4-Cylinder-parts-list-original-/321208306913#ht_139wt_1312Apart from the presence of more cylinder head bolts (the Lister version was based on a JP engine). You will note the similarities between the Indian and the Ruston Hornsby VRH / Lister JP cylinder head.