Mboasty
03-01-12, 09:56 PM
hi, I fully rebuilt my xe a little while ago, it has ported cylinder head, reprofiled autosprint fast road cams, steel rods, 1mm oversize valves and double valve springs etc.
At the time when the car was back on the road, i had a 4-1 ebay stainless manifold, which i had had to modifiy quite alot to fit my magnex full system, but i was getting a rattly tinny noise from the exhaust at about 2-3000 rpm, it can be heard in the backfire aswell when not under accelaration. i concluded that this was down to the stainless manifold/my modifications to it and magnex, making this anoying noise.
so in the end i decided to do things properly and have a custom exhaust made to suit, so had a custom stainless 4-2-1 manifold and full stainless system made by john ashley hoping this would be the end of the problem.
unfortinaly im still getting the same noise at about 2-3000 rpm, im gutted to say the least! maybe it is the nature of mods and exhaust thats creating this anoying noise but its driving me crazy!
has anyone had simlar problems? could it be anything else creating this noise some how? ive wonderd if its the engine rattling, but that dosent explain the same noise in the backfire.
the engine runs prety smooth on the whole and the new exhaust done wonders, although it does need setting up properly, as the afm and idle valve are at war because of the cams (another story!)
its just doing my head in especialy after spending so much time at it im just not getting the results i wanted!
any ideas most appricated
matt
At the time when the car was back on the road, i had a 4-1 ebay stainless manifold, which i had had to modifiy quite alot to fit my magnex full system, but i was getting a rattly tinny noise from the exhaust at about 2-3000 rpm, it can be heard in the backfire aswell when not under accelaration. i concluded that this was down to the stainless manifold/my modifications to it and magnex, making this anoying noise.
so in the end i decided to do things properly and have a custom exhaust made to suit, so had a custom stainless 4-2-1 manifold and full stainless system made by john ashley hoping this would be the end of the problem.
unfortinaly im still getting the same noise at about 2-3000 rpm, im gutted to say the least! maybe it is the nature of mods and exhaust thats creating this anoying noise but its driving me crazy!
has anyone had simlar problems? could it be anything else creating this noise some how? ive wonderd if its the engine rattling, but that dosent explain the same noise in the backfire.
the engine runs prety smooth on the whole and the new exhaust done wonders, although it does need setting up properly, as the afm and idle valve are at war because of the cams (another story!)
its just doing my head in especialy after spending so much time at it im just not getting the results i wanted!
any ideas most appricated
matt