Stage 4 Upgrade
Discussion
Just got my 3R back today from the boys at Noble Motorsport 
after a stage 4 upgrade
Must congratulate the boys on a great job. The Noble Motorsport Exhaust is just awsome such a mild growl but OMFG when you hit the pedal on the right its just bizzare ,thanks for the advice glad we only went to stage 4 this time cant wait for stage 5 ,cant belive its only 473 hp seems way more and the torque at 416lbft just right only hooned it along a wet A47 Dereham bypass in the dark and some nice B roads very carefully but well impressed cant wait for daylight.Thanks again Mike and Peter and all the boy at Noble Motorsport it was worth every penny and the drive especialy the exhaust I love that sound .Will post the dyno result in the morning now going to tuck it away in the workshop
Ian
after a stage 4 upgradeMust congratulate the boys on a great job. The Noble Motorsport Exhaust is just awsome such a mild growl but OMFG when you hit the pedal on the right its just bizzare ,thanks for the advice glad we only went to stage 4 this time cant wait for stage 5 ,cant belive its only 473 hp seems way more and the torque at 416lbft just right only hooned it along a wet A47 Dereham bypass in the dark and some nice B roads very carefully but well impressed cant wait for daylight.Thanks again Mike and Peter and all the boy at Noble Motorsport it was worth every penny and the drive especialy the exhaust I love that sound .Will post the dyno result in the morning now going to tuck it away in the workshopIan
ThatPhilBrettGuy said:
TIGERSIX said:
valve springs not changed
Good luck with that then. It's well documented that standard M400's running less BHP than that have damaged the heads due to value spring problems.Edited by TIGERSIX on Sunday 21st December 15:09
ThatPhilBrettGuy said:
TIGERSIX said:
valve springs not changed
Good luck with that then. It's well documented that standard M400's running less BHP than that have damaged the heads due to value spring problems.What i was thinking.Peter that sounds a bit Jethro esque sorry but just been watching him this afternoon,calming down now after a jolly afternoon hooning around Norfolk I apologise in advance if I cut up overtook without consideration blah blah any members of this site or the public in general todayIf you believe that then you need a holiday.Regards Ian
If you believe that then you need a holiday.Regards IanTIGERSIX said:
ThatPhilBrettGuy said:
TIGERSIX said:
valve springs not changed
Good luck with that then. It's well documented that standard M400's running less BHP than that have damaged the heads due to value spring problems.This leads to valve seats getting burnt / damaged.
The fix is to fit stronger valve springs.
Some M400's had problems with the factory boost curve being too high thus compounding the problem.
Talk to Trevor Jasper (Yellowshed on here).
F.C.
Some M400's had problems with the factory boost curve being too high thus compounding the problem.
Was this just restricted to M400s with to higher boost curve or has it affected ones running normal boost curves,and was it compounded by the vehicle running to higher rev limit to attain an unsustainable BHP/Torque figure ?
TIGERSIX said:
Some M400's had problems with the factory boost curve being too high thus compounding the problem.
Was this just restricted to M400s with to higher boost curve or has it affected ones running normal boost curves,and was it compounded by the vehicle running to higher rev limit to attain an unsustainable BHP/Torque figure ?
My M400 left the factory making 371bhp (as did most of the others) It suffered from valve surge, I think the problem is limited to the M400 because of the higher lift cams. Was this just restricted to M400s with to higher boost curve or has it affected ones running normal boost curves,and was it compounded by the vehicle running to higher rev limit to attain an unsustainable BHP/Torque figure ?
Trouble was once it was apart we had to play with it
TIGERSIX said:
Just got my 3R back today from the boys at Noble Motorsport after a stage 4 upgradeMust congratulate the boys on a great job. The Noble Motorsport Exhaust is just awsome such a mild growl but OMFG when you hit the pedal on the right its just bizzare ,thanks for the advice glad we only went to stage 4 this time cant wait for stage 5 ,cant belive its only 473 hp seems way more and the torque at 416lbft just right only hooned it along a wet A47 Dereham bypass in the dark and some nice B roads very carefully but well impressed cant wait for daylight.Thanks again Mike and Peter and all the boy at Noble Motorsport it was worth every penny and the drive especialy the exhaust I love that sound .Will post the dyno result in the morning now going to tuck it away in the workshopIan
Got a stage 3 (just to 410bhp/390lbs) with new intercooler, cam timing and remap from them. Got to say the difference was immense afterwards and they seemed very confident that the solution was robust (although I suppose they would wouldn't they after a stage 4 upgradeMust congratulate the boys on a great job. The Noble Motorsport Exhaust is just awsome such a mild growl but OMFG when you hit the pedal on the right its just bizzare ,thanks for the advice glad we only went to stage 4 this time cant wait for stage 5 ,cant belive its only 473 hp seems way more and the torque at 416lbft just right only hooned it along a wet A47 Dereham bypass in the dark and some nice B roads very carefully but well impressed cant wait for daylight.Thanks again Mike and Peter and all the boy at Noble Motorsport it was worth every penny and the drive especialy the exhaust I love that sound .Will post the dyno result in the morning now going to tuck it away in the workshopIan
). Can I also ask about the exhaust cost? Any chance of a sound file to have a listen?
Just checked with the boys who know and the M400 doesnt have higher lift cams its just timing is advanced,the prob with the M400 was the boost curve,as for the exhaust it a twin silencer design made from stainless steel, doesnt sound as resonant as the Roush it has a much deeper growl far less obtrusive in built up areas haven't done a noise test yet but will take some pics later and post them when I figure out how to upload onto this site any advice on that front would help.
Sorry cost somewhere around £1700.00:
Sorry cost somewhere around £1700.00:Edited by TIGERSIX on Monday 22 December 14:35
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