CageyH Posted January 11, 2007 Share Posted January 11, 2007 4-1 Competition exhaust to fit a k series (the one with the long primaries exiting the body) with 5" non repackable silencer. It will need a polish to keep the polishers happy. The silencer has the heat guard fitted, which I have never removed. Having just bought a 4-2-1 with a 7" silencer, it is time to move this on. Ideal upgrade for anybody with a 4-1 with single pipe exit in the side skin (after you enlarge the hole). Retails new from Caterham for £495 + vat. I am now looking for £275. Buyer to collect, or GONADS preferable. Only dead fish go with the flow.... Edited by - CageyH on 21 Mar 2007 22:55:33 Link to comment Share on other sites More sharing options...
Little Bob Posted January 11, 2007 Share Posted January 11, 2007 CageyH - have you got any pictures? Link to comment Share on other sites More sharing options...
CageyH Posted January 11, 2007 Author Share Posted January 11, 2007 Not yet. But I can get some of the exhaust off the car Forgot to mention, it is off my '97 Roadsport, which I purchased in 2004, so don't know the history of it before that. Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
Little Bob Posted January 11, 2007 Share Posted January 11, 2007 Any idea of what effect changing from a 4-1 with single pipe exit to this would have? Extra BHP, improved torque etc? Is it a simple bolt on and away you go? Apologies for the numpty questions... Link to comment Share on other sites More sharing options...
CageyH Posted January 11, 2007 Author Share Posted January 11, 2007 You will notice an increase in torque apparently. I have always had this exhaust, so can't comment on a 4-1 internal collector, but search in Tech Talk and look for other peoples comments. You need to enlarge the exit hole in the side skin to fir four pipes through. It will just bolt on in place after, using just the rear exhaust mount on the body. This exhaust has no cat, so may liberate a couple of BHP, but is an ideal first upgrade. It will release the benefit of additional tuning/upgrades such as larger throttle body and vernier pulleys etc. Just uploading some pictures now. Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted January 11, 2007 Author Share Posted January 11, 2007 Pictures here Have not had a chance to clean the exhaust after my last blat. I also included one showing it mounted on the car. The bronze colour is evident, as I got sick of polishing the exhaust, and it going this colour again quickly! Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
David Lynch Posted January 11, 2007 Share Posted January 11, 2007 ....and they sound fantastic. BTTT on me 1.4K SS 😬 here 'You've got be in it to lose it !' Link to comment Share on other sites More sharing options...
MartinWoodham Posted January 12, 2007 Share Posted January 12, 2007 Little Bob, I did this upgrade last year ie from 4-1 collector inside the body to long, individual primaries merging outside the body. I've seen a marked improvement in the mid range 'go', and surprisingly the engine (1600 standard K ie 115bhp) revs higher according to the rev counter. I don't really understand how his could be, since the rev limiter should be the limiting factor in both cases, but it's certainly true. Whether these tanslate to more bhp/ lbft or not I couldn't say, but it's been a very worthwhile £500 investment in my view. Better sound too. Apparently with a bigger throttle body (not much £) the difference is even better. I should say that fitting the thing is *largely* straightforward, I have a short passenger footwell (race chassis) car, with the battery relocated onto the top of the bulkhead, so that gave me plenty of fiddle room. The major major PITA in installation is that if you don't have a template, you'll be trial-and-erroring cutting the side skin. I must have fitted/ removed the primaries over 15 times before I got good clearance, I sh1t you not. Including when you think it all looks fine then you trial fit the collector and all the primaries twist out of position....then again when you fit and torque up the silencer. Plus all the worry of cutting a very visible bit of your car - my personal survey of other people's zaust holes is that no two are anywhere near similar, so don't worry about doing it just right - if the primaries fit through without fouling the bodywork, allowing for some vibration and expansion with temp, then you're fine. But if you can find someone else to do it for you, do! Martin Aero'd Roadsports B with a garage slowly filling up with upgrade parts Link to comment Share on other sites More sharing options...
MartinS Posted January 12, 2007 Share Posted January 12, 2007 Hi CageyH, YHM! M. Martin Saunders ohh, is it upgrade time? :) Link to comment Share on other sites More sharing options...
CageyH Posted January 12, 2007 Author Share Posted January 12, 2007 Still available (for now ) Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted January 14, 2007 Author Share Posted January 14, 2007 Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted January 16, 2007 Author Share Posted January 16, 2007 Any interest? MartinS - your interest still noted Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted January 19, 2007 Author Share Posted January 19, 2007 Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted January 21, 2007 Author Share Posted January 21, 2007 😳 Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted January 28, 2007 Author Share Posted January 28, 2007 Anybody want to make some noise? Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
Jason Plato Posted January 28, 2007 Share Posted January 28, 2007 I'm surprised this hasnt sold cagey its great value and would make a terrific upgrade for thoses K series owners with the 4-1 "inside engine bay" exhaust. The lift in mid range is noticable Its simply a case of remove old 4-1 ( and sell it for £100 to the race boys), cut hole in body ( templates are freely available and new exhaust manifold gasket (£4?) and bolt him on here is C7 TOP Taffia Area Rep Link to comment Share on other sites More sharing options...
CageyH Posted January 28, 2007 Author Share Posted January 28, 2007 Me too. I have had an offer on it. Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
MartinS Posted January 28, 2007 Share Posted January 28, 2007 *watching* . . . . Have a on me M. Martin Saunders ohh, is it upgrade time? :) Link to comment Share on other sites More sharing options...
CageyH Posted January 29, 2007 Author Share Posted January 29, 2007 MartinS Obviously nobody else want it. So, I guess it is yours if you still want it? Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted February 3, 2007 Author Share Posted February 3, 2007 Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
CageyH Posted February 6, 2007 Author Share Posted February 6, 2007 MartinS - YHM. You still watching? Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
MartinS Posted February 6, 2007 Share Posted February 6, 2007 *slap* Back alert again, sorry your mail went in the spam folder (I must fix that). Still interested but have been advised I should get a 4-2-1 ideally (rare to see them come up for sale) so I'm happy to stall while you get a better offer.. M. Martin Saunders ohh, is it upgrade time? :) (edited to fix horrible grammer) Edited by - MartinS on 7 Feb 2007 16:58:24 Link to comment Share on other sites More sharing options...
CageyH Posted February 7, 2007 Author Share Posted February 7, 2007 Still available if anybody wants it then? Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
Rob Walker Posted February 8, 2007 Share Posted February 8, 2007 Kevin speak to Rupert Handley , I think he wants one tel 07980 865259 Link to comment Share on other sites More sharing options...
CageyH Posted February 8, 2007 Author Share Posted February 8, 2007 Thanks Rob. I'll see him at the next meet. Only dead fish go with the flow.... Link to comment Share on other sites More sharing options...
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