Jaguar CDI

[074KU]

The Jaguar/Performance CDI gave dramatically improved longevity to an engine (with the caged big end needle roller bearing assembly) when the engine was partially damaged from the standard CDI at approx 300 kilometers (185 miles) of which it then lived for 3,000 kilometers (1,850 miles) before the big end completely collapsed.
Out of 5 engines, the most distance they ever recorded (using caged big end needle roller bearing assembly) was 700 kilometers (430 miles) and those engines were babied along to try and extend their life to 700 kilometers, using the standard CDI.

The Jaguar/Performance CDI gave a Quantum leap to engine reliability and longevity.

The Jaguar CDI also provides benefits over the other CDI's in that it has multi-adjustable ignition curves.

Wow, this has to be the most clearly written, well through out and calm response I have seen all day on this topic.. so much hate over these things.. CREDIT CARD TIME!
I am a little surprised tho you only get 300-700km out of a big end bearing, my last rebuild, done at around 5500km (a guess as I switched computers half way) had my big end bearing well within tolerance (I have since put some 1650km extra on it). I noticed in other posts you do some extreme climbs and have even seen your multi-trailer hauler and guess it its mostly down to this? You have me worried now.. :sad3:

 

[Fabian]

Wow, this has to be the most clearly written, well through out and calm response I have seen all day on this topic.. so much hate over these things..

I am just reporting the facts as they stand, based on my experiences with these engines.
As you can probably gather, i need to rely on the engine and drive-train doing it's job with surgical efficiency, as i am involved in long distance touring, which (at times) involves travelling over rough terrain; sometimes negotiating terrain that's particularly difficult to ride over, or to try and ride around.

I am a little surprised tho you only get 300-700km out of a big end bearing,

With the older style "caged big end needle roller bearing assembly", and usingthe standard CDI, i was only getting a "max" of 700 kilometers out the big end.
With the older style "caged big end needle roller bearing assembly", and using the Jaguar CDI, i managed to geta "max" of 3,000 kilometers out the big end bearing, "on" an already partially damaged big end that was 300 kilometers old.

The only component change in the system (that allowed the extra big end bearing life) was the Jaguar CDI.

With the newer style "crowded big end needle roller bearing assembly", and using the Jaguar CDI, i am getting 10,000 kilometers out a big end bearing, although by that time, it does sound like a bunch of ball bearings in a tumble dryer.

That said, it costs AU$30 for a replacement crankshaft and connecting rod assembly, so i'm very happy with the outcome, and with the Jaguar CDI.

 

[OCCStingray]

Are these bottom end bearings getting damaged from pinking via too advanced ignitions on the standard CDI?

 

[Fabian]

I cannot give a definite answer because i don't have a dyno with a knock sensor, nor have i ever had one of these engines strapped to a dyno to verify anecdotal evidence based on my experiences.

What i can say is that anecdotal evidence based on my experiences has shown that the Jaguar CDI eliminates detonation (also known as pinging) from what would appear to be an excessive level of ignition advance with the standard CDI.

On a partially damaged engine (using a standard CDI) up to the 300 kilometer mark, then changing to the Jaguar CDI from that point onwards, a total increase over previous engine life of more than 400% was seen, just by changing one single component; being exclusively the Jaguar CDI.

You will have to make your own conclusions based on that information.

 

[66ccCruiser]

The instructions are online and are normally found by following the provided link on the distributors page (JNMotors, Sick Bike Parts).
Let me know if you still have any questions.

By "great" do you mean smoother idling, less vibration, more top speed?

I've got your CDI Jaguar and it performs great...CDI in the handlebar leather bag to keep vibrations off it and concealed....you website has proven to be very insightful as well....Thanx Brother!!

 

[Deleted member 12676]

nice setup
all you need now is suspension forks