Lynx II, hull # 4225

[Peter Duggan]

Charlie,

Welcome to the club. I have decided to defer installing the engine until I can sort out the issue with the pulleys. I did temporarily install the generator to see how those pulleys lined up with the others. Seems to line up better with the crank pulleys. Both seem to stick out further than the water pump pulleys.

My original engine was stamped C81T-LH on the LH head while the rebuilt engine has C7RA-A cast on the LH head. I have yet to find any differences between the two engines. The shaft from the crank is 3 1/16" from the edge of the block to the end on both engines.

I brought the Lynx home to keep me challenged both mentally and physically. She's doing a great job. Tomorrow is another day.

Rick,

Sharp eyes. I didn't pick that up until I went to install the generator. Wish all fixes were that easy.

Guys,

I welcome all and any suggestions.

Peter

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[super dave]

From looking at your pictures I would say you need different water pump pulleys as shown in this picture which stick out further as you can see the pulley groove is almost flush with the end of the shaft compared with the offset ones you have now.

[Wayne Hingley]

I think you are right Dave. Can the current pulleys be flipped around, so the offset is toward the end of the shaft?

[Wayne Hingley]

I think if the pulley in the top of this photo was flipped around (so the cone-shaped portion is close to the engine), the belt would be more aligned with the crank pulley and generator.

[super dave]

I do not believe that the pulley can be reversed but I will see if I can get the part number off of the one I pictured on my next visit. Yes the carb can be mounted either way I did not know which way at the time I ran it up.

[Lynn Eades]

I don't have any answers, but the water pump looks fine.
The fault has to be in the area of the crank,crank pulley.
Rick, which crankshaft and block are listed in your parts book?

[Richard Coutts-Smith]

Peter, thanks for the ID on the map case. I have been using one for the last few years (for our bush trips) and always wondered what/how the brackets fitted.
See quite a few of these around over here, all in unused NOS condition. Remarkable for a bit of kit that age (C.G. Hartley & Co. 1944), any idea what the fancy hook on the top strap is for?
Rich.

[lynx42]

Originally Posted by Lynn Eades

I don't have any answers, but the water pump looks fine.
The fault has to be in the area of the crank,crank pulley.
Rick, which crankshaft and block are listed in your parts book?

Hi Lynn, Probably not much help but the numbers are straight out of the book and don't mean much to me.

Block .. .. .C29SR 6010 S.
Crankshaft .. . . C99A 6303.

The water pumps on mine are single belt not double like Peters.

Crankshaft Pully.. .6312.

Water Pump Nos... .... RHS. 8503
Water Pump Nos... . LHS. 8504

Water Pump Pully. ... 8509

Regards Rick.

[Lynn Eades]

The C81T heads are "handed" left (6049) and right (6050) These are for pre 42 engines.
while the later C7RA heads fit on either side. The early heads fit the early blocks, but need to be relieved at the valve chamber to fit on the later blocks.(the valve line was moved up hill in the 42 engines)
The C7RA heads come in either Iron or Aluminium. The Ali is higher compression than the cast. Both types of C7RA heads are Higher comp. than the C81T heads.
The manifold required has the facility to fit two sets of 3 carb mounting studs.
on its carb mounting face.