CO2MAX Posted March 22 Share Posted March 22 My 420S SV build is coming along but it seems I’ve got many of the same issues as others have experienced. I haven’t found anyone mention this problem however (or maybe the solution is too trivial to blog about🤔): I got as far as test fitting my engine rubbers today only to discover that the RHS rearmost section sits on top of a weld and won’t level out onto the chassis - also whilst the bolt doesn’t actually foul on the vertical chassis member it does appear very close. Before I contact Caterham for their input, has anyone here come across this or have any suggestions? (the photos show where the engine rubber fouled on the weld and I managed to remove some powder coating before realising I had a problem🙄). Cheers, Craig. Link to comment Share on other sites More sharing options...
OldAndrewE Posted March 22 Share Posted March 22 (edited) The obvious answer is that the weld needs to be ground away to allow fitment which will of course damage the coating. You can also probably grind away a bit of the engine mount to minimise the amount of weld needing removing. Edited March 22 by OldAndrewE Words added 1 Link to comment Share on other sites More sharing options...
simon_h Posted March 23 Share Posted March 23 I’d take the material from the steel base of the mount. A half round file and 30 seconds and it’ll be clear. I wouldn’t take any of the weld away personally 5 Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 23 Share Posted March 23 I agree with Simon, relieve the mount. On my 98 car the engine earth bolts to the chassis using one of the mount bolts. It is recommended to clean parts to bare metal to get a good contact. Bit of coppa slip prevents corrosion. 1 Link to comment Share on other sites More sharing options...
Peter_V Posted March 23 Share Posted March 23 Same issue on my 420sv. Agree with Simon and just removed a small amount of metal from mount with a half round file and then repainted. 1 Link to comment Share on other sites More sharing options...
CO2MAX Posted March 23 Author Share Posted March 23 Thanks everyone. I was concerned about maintaining the integrity of the weld and/or the mount. I’ll take your advice and file down the mount just enough to get a good fit. Link to comment Share on other sites More sharing options...
Matt420R Posted April 30 Share Posted April 30 Could someone please confirm what bolts I need for fitting the engine rubbers to the chassis? I assume M8, but don't know which pack to source them from. My kit contained a small box labelled engine that had the mounts, rubbers, gearbox mount and the 1/2 UNF bolts, but no bolts for the rubbers. I've emailed buildsupport at caterham but have radio silence! Link to comment Share on other sites More sharing options...
Skipper555 Posted April 30 Share Posted April 30 If they're the same as on my 2006 SV with a K-Series (and I'd assume so for this kind of part) they are 5/16" and 1.75" long fitted with nyloc nuts and a washer Link to comment Share on other sites More sharing options...
Ainsley Posted April 30 Share Posted April 30 Be aware, they all need to stick out of the bottom the same length, I believe one of the bolts in the kit may be longer as it originally had to cope with the engine earth strap being fitted. That is no longer advised so one bolt may be longer. I ended up not realising till I noticed it sticking out further than the others and had the pain of cutting it to match in situ. Removing it is a worse pain as the engine mount ends up pulling the holes out of alignment and you spend ages loosening off all the engine mount bolts to line it all up. Link to comment Share on other sites More sharing options...
Ainsley Posted April 30 Share Posted April 30 I seem to recall they were metric, the only imperial were the ones that go through the rubber on my 2024 car. 1 Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted April 30 Member Share Posted April 30 1 hour ago, Matt420R said: Could someone please confirm what bolts I need for fitting the engine rubbers to the chassis? I assume M8, but don't know which pack to source them from. My kit contained a small box labelled engine that had the mounts, rubbers, gearbox mount and the 1/2 UNF bolts, but no bolts for the rubbers. I've emailed buildsupport at caterham but have radio silence! The size, torque and fastener pack code are in the 2015 Assembly Guide. Please let me know if you'd like a copy. Jonathan Link to comment Share on other sites More sharing options...
Peter_V Posted April 30 Share Posted April 30 They are in the miscellaneous pack 49. The give away is that there are 3 M8x45 bolts and 1 M8x50 for the earth that isn't used anymore! The M8 nyloc and washers are in the same pack. I left the single bolt long as a nod to the old days.. Link to comment Share on other sites More sharing options...
ScottR400D Posted April 30 Share Posted April 30 Almost 10 years since they stopped recommending butchering the chassis yet they still haven’t sorted the fasteners…….. Link to comment Share on other sites More sharing options...
Matt420R Posted April 30 Share Posted April 30 (edited) 2 hours ago, Peter_V said: They are in the miscellaneous pack 49. The give away is that there are 3 M8x45 bolts and 1 M8x50 for the earth that isn't used anymore! The M8 nyloc and washers are in the same pack. I left the single bolt long as a nod to the old days.. Thanks for the confirmation. I managed to speak with someone at Caterham in the parts department (still no email reply from the build support email address!) who to be fair, went through my records and called me back to tell me that they are in pack 30P012B (pack 49) which I have as opposed to 30P012A which the 2015 guide refers to (and I don't have). I too had come to the conclusion that they would probably be the 3 M8x45 and 1 M8x50 which they confirmed. I'll source my own M8x45 bolts to make sure have 4 alike! I get the impression that this will be the first of many times I think "Why didn't they just say that in the instructions!" Edited April 30 by Matt420R Link to comment Share on other sites More sharing options...
Ainsley Posted April 30 Share Posted April 30 Remember, they are not instructions, they are a guide 🙂 Link to comment Share on other sites More sharing options...
Nigel Riches Posted May 1 Share Posted May 1 Be sure to get the correct grade when buying your bolts. Link to comment Share on other sites More sharing options...
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