vernon Posted November 30, 2013 Share Posted November 30, 2013 My plan with the new black GTE is to fit a c20let , I have the mounts and sump that is needed , I have the 1800 box too , now how good is this really? I have read somewhere that the Carlton box r25-28 is it ? Is the better box to use , it this is so does it bolt in or is there mods to be mate? Any help appreciated. I am also thinking about bigger brakes running 17 inch wheels so I could use the calibra turbo calipers that I have , did read an add on here about discs and was wondering if anyone is using turbo ones? What about rear disc conversion anything out there that can be used? Sorry for all the questions just looking to pick you rear wheeled guys brains , as this is all new to me cheers guys Quote Link to comment Share on other sites More sharing options...
mantaray Posted November 30, 2013 Share Posted November 30, 2013 R25 box can be used but its not bolt in. It would be well worth your while to join the club (only £25/year ) as all the info you are requesting, and more, is available in the members area. If as you say you are new to Mantas it will be the best £25 you spend on your car. There are quite a few members who have done the C20Let convertion who have posted about it. 1 Quote Link to comment Share on other sites More sharing options...
rutts Posted November 30, 2013 Share Posted November 30, 2013 would really worth your while to join club even if only as a web user for contacts and info available. cost of club membership can be reimbursed by trade club card usage and loads of info available from very experienced manta/ascona owners. Quote Link to comment Share on other sites More sharing options...
vernon Posted December 1, 2013 Author Share Posted December 1, 2013 OK sound I'll sort that now 2 Quote Link to comment Share on other sites More sharing options...
vernon Posted December 1, 2013 Author Share Posted December 1, 2013 A massive help many thanks Quote Link to comment Share on other sites More sharing options...
Kevin Abbott Posted December 1, 2013 Share Posted December 1, 2013 Thanks for joining the club 1800 box will not last very long unless you are carefull. R25 R28 box uses a hydraulic clutch and RP do a fitting spacer ( pics of the pedal mod required are on RP website, blue ascona) If you are using a standard turbo then you need one of my turbo side engine mounts, the top hat needs to be reversed, I can't get the reverse top hats any longer ( need to check that) I can supply a 3 piece clutch to suit flat or pot flywheel. Keep the cally t calipers and have a pair of cosworth 2wd 284 mm discs drilled with the hub brake disc PCD, bolt on job and really good brakes Rear disc conversions, i used to do them but all my parts were taken in a unit move and i no longer have them. You need fwd mk3 ecsort discs drilled to suit 4x100 PCD and sierra ( or granada) rear calipers, clamp at 12 o'clock and make a mdf template, go and have that cut out of 10mm steel, fit ford +25mm studs Kev Quote Link to comment Share on other sites More sharing options...
mantasrme Posted December 1, 2013 Share Posted December 1, 2013 You'll need to check which calibra turbo calipers you have, early or late as they were for different sized discs. Early are 283 late 288, you need early for the cossie discs Quote Link to comment Share on other sites More sharing options...
manta88 Posted December 1, 2013 Share Posted December 1, 2013 As mantasrme says and you should end up with very good front brakes but the calipers and repair kits are hard to come by , i got my kits from Big Red. Quote Link to comment Share on other sites More sharing options...
vernon Posted December 2, 2013 Author Share Posted December 2, 2013 Thanks guys that sound just the jib as the brakes are shocking even trying to stop the 1800 lol Quote Link to comment Share on other sites More sharing options...
vernon Posted December 2, 2013 Author Share Posted December 2, 2013 My calipers are the earlier ones so that's OK then Quote Link to comment Share on other sites More sharing options...
BUNGAL Posted December 12, 2013 Share Posted December 12, 2013 Hi Vern nice to see another mk1 Astra man joining the rwd world, cheers chris from Bristol,(astravan) Quote Link to comment Share on other sites More sharing options...
Sutty2006 Posted December 12, 2013 Share Posted December 12, 2013 Retro Power do a conversion to run a manual Omega gearbox, That would be the route I go down If i was to LET my 16valve. When you fit the engine, use a Range Rover V8 3.5 engine mount bobbin on the drivers side.... this gives good clearance to run standard bonnet. Quote Link to comment Share on other sites More sharing options...
taylorblue5 Posted December 12, 2013 Share Posted December 12, 2013 I have a c20let manta. I used one of Kev's engine mounts and used an xe powercap and used three inch pipework with a cosworth rs500 intercooler. The powercap clears the bonnet nicely. Welcome to the club. Gets expensive from here on in haha. 1 Quote Link to comment Share on other sites More sharing options...
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