OrangeMax

Greetings, I'm just about to remove the Sierra Diff from my Caterham and if I correctly understand this conversation the Right Hand nut is removed by turning anti-clockwise and the Left Hand Nut is removed by turning clockwise? The torque specification is 200 FT Pounds? Thanks! MAX

My sincere thank you to all of you. Yes, this is the information I needed to install the sump guard. :) MAX

Greetings, I'm interested in adding this part to my Duratec powered Caterham, but I can't find any pictures showing its installation. Does anyone have experience installing this part they would like to share? Thanks! MAX

Just an update on my curious 6 Speed. It does use the factory shifter made by Quaif. The former owner contacted me after reading my questions here on this forum. He informed me he purchased it from Raceline. Apparently Raceline was not clear of its origin to him. He just assumed the oversized shaft was a race modification. According to him, his customers usually require the refit of the saddle every 2 years or so if they track the car because the saddle becomes worn out. He thought the oversized shaft was the way someone created to prevent this failure. He also had trouble with getting the car out of reverse, but never thought to grease it up. He recommended I contact Road Race Transmissions, as perhaps they could shed some light on its unique reverse feature. MAX

It's off the transmission that was supplied with the car. The previous owner, (actually a Caterham dealer) isn't really forthcoming about where the parts for this Caterham originated from. I'll be taking the shifter out again when the saddle arrives. When that happens, pictures will follow. It will be interesting how all the parts fit up. I agree with you that wear with the current setup will be an issue. I'm curious if you know the outside width of the shifter fork? MAX

Greetings John, Thank you for the Guide. I followed the recommendations, cleaned and greased the shifter. It's working far better now. I'm happy! There is one curious item though. When I removed the shifter I noticed that the saddle you referred to (Ford PN 1522783) was missing from my shifter. I'm not sure the saddle would work in my application as the shaft that the saddle fits on is .375 inch in diameter and the fork spacing on the shifter is +.375 inch. (see photo). Did they make a version of this transmission that did not use the saddle?

Unfortunately, mine is not doing that. When I pull it back, it doesn't pop up. It's not quite in the gear, yet not completely free. MAX

Greetings, I wondering if there is some "Trick" to getting the Caterham 6 speed box out of reverse gear. Here is the situation. I put the car into reverse easy enough, but when I go to select 1st gear, the box seems stuck not in reverse and not in 1st and not really in neutral. If I grab the shifter with both hands I can shake it back into neutral and then I can shift it into first gear. Is there something I'm not doing correctly? Does the shifter need to be lifted or depressed prior to shifting out of reverse? Is some type of adjustment required? Thanks for any insight. Regards, MAX

Thank you for the recommendation. The email to Darren @ Caterham has been sent. MAX

Yes, there are many DS tank manufactures in the US. The smallest diameter tank available here is 6 inch. This will not fit in the space in front of the engine. The 5 inch tanks available that I've found so far have a capacity about 3.5 liters. There seems to be a concenses that around a 7 liter system is best. So far the only option I've found is the CC DS tank. If someone knows of a experienced DS tank fabricator who can make a front mounted tank in that has the volume of the CC tank, please share. Thanks! MAX

Greetings, I'm looking for a new dry sump tank for my Duratec powered Caterham. The chassis is a S3. The current location of the DS tank is on the right side of the car just in front of the passenger (in this case) foot well. Unfortunately the location is just behind the exhaust header. Oil temperatures are high, 140c before I installed a heat shield and about 130c after I installed the heat shield between the tank and the exhaust header. I plan to move the tank location to the front of the engine. I've looked into the Caterham triangle shaped tank and I'd use it but it appears to be out of stock. Does anyone have this tank available, new or used? What is the capacity of the Caterham DS tank? Barring the factory option I found this tank on the internet:https://ahfabrications.co/store/oil-systems/dry-sump-tanks-oil-tanks-and-coolers/ahf080-dry-sump-tank-for-caterham-westfield/ Does anyone have experience with this tank? It would fit the location at the front of the engine but the working capacity is listed at 3.86 liters. Is this enough capacity for the Duratec engine? Are there other DS tanks available that would fit in front of the engine? Thank you. MAX

Wanted, Factory Caterham dry sump tank for my Duratec powered Caterham. Must be willing to ship to USA. Thank you. MAX

So I took the car out for a drive today and did the final setup on the speedometer. It's now about dead on with the GPS speedometer, so I'm calling this job done! Thanks to everyone who offered their experience, especially John Vine. Now its on to fine tuning the roller barrel throttles and some fine tuning on the tach. Then off to get the car titled and Licensed! OM

So to increase car mounted Speedometer reading to match GPS you would multiply. To decrease the car mounted Speedometer reading to match GPS you would divide. OM

Greetings, The Silver MPH speedometer showed up from Caterham. It's rather nice having the correct speedometer in the car working as it should. I set it for my current tire size as shown in the chart. It's a bit fast compared with the GPS speedometer but I can tune that out. My understanding of the procedure is to drive the car at 60 mph as shown on the speedometer and compare it to the GPS Speedometer. If the GPS is indicating 65 MPH when the car speedometer is showing 60 MPH. The formula is this: 60/65=.923 Then divide the Pulse Code (023855/.923=025845)?(example numbers shown, no test done yet). OM