Me and a fellow MG ZS180 friend have been talking a lot lately about a possible mod for the 180 or 190 engines that could cost less than £80 in parts.
After much research, measuring and testing we have come to discover that there is the possibility of getting over 200bhp from a KV6 without a remap or spending loads of money.
There are some differences in the 180 and 190 engines that give them their different power. 2 of the biggest ones for the 190 engine is that the intake system is better for infinite better breathing and also the Inlet cam is advanced by 4 degrees using a static pully. We also discovered that the exhaust cams on both engines have a duration of 244 degrees and 8.8mm lift, instead of the 236 degrees and 8.2mm lift the standard inlet ones use.
So our theory is, why not use 2 pairs of exhaust cams giving them the mild fast road cam effect as well as the inlet pullies from the ZT190 giving you 4 degrees advanced timing. The Valve spring and cap ratings are exactly the same on the front and back which helps a lot.
So for the price of £70-80 you can have a mild fast road cam set-up at 244 degrees aswell as advanced timing on the inlet which would be the same effect as having vernier pullies. Much better than spending £500+ on Kent or Piper just for cams and no one seems to make the verniers anymore so this theory should be some proper bang for buck and is a perfect mod if belts are being done at the same time.
We predict (due to the 260 degree Piper Cam giving 20+bhp on a standard engine) That the cams alone will give in the region of 10+bhp (as they give roughly 50-55% increase of the Pipers) and then a further few bhp from the advance timing on the inlet. So in theory 15+bhp is not impossible at all. Matched with a full 2.5" straight through from flexi back, modified sealed air filter and a remap should see closer to 215-220bhp. And of course maybe another 10 if a walbro fuel pump and uprated injectors are installed before the remap.
So again, in theory, there isn't any reason this wont work aswell as a full cam and pully set up from a leading company, just a milder road use version and anyone who knows what a ZS180 is like, giving it 215-220bhp will put it in a different league.
What are your thoughts.
After much research, measuring and testing we have come to discover that there is the possibility of getting over 200bhp from a KV6 without a remap or spending loads of money.
There are some differences in the 180 and 190 engines that give them their different power. 2 of the biggest ones for the 190 engine is that the intake system is better for infinite better breathing and also the Inlet cam is advanced by 4 degrees using a static pully. We also discovered that the exhaust cams on both engines have a duration of 244 degrees and 8.8mm lift, instead of the 236 degrees and 8.2mm lift the standard inlet ones use.
So our theory is, why not use 2 pairs of exhaust cams giving them the mild fast road cam effect as well as the inlet pullies from the ZT190 giving you 4 degrees advanced timing. The Valve spring and cap ratings are exactly the same on the front and back which helps a lot.
So for the price of £70-80 you can have a mild fast road cam set-up at 244 degrees aswell as advanced timing on the inlet which would be the same effect as having vernier pullies. Much better than spending £500+ on Kent or Piper just for cams and no one seems to make the verniers anymore so this theory should be some proper bang for buck and is a perfect mod if belts are being done at the same time.
We predict (due to the 260 degree Piper Cam giving 20+bhp on a standard engine) That the cams alone will give in the region of 10+bhp (as they give roughly 50-55% increase of the Pipers) and then a further few bhp from the advance timing on the inlet. So in theory 15+bhp is not impossible at all. Matched with a full 2.5" straight through from flexi back, modified sealed air filter and a remap should see closer to 215-220bhp. And of course maybe another 10 if a walbro fuel pump and uprated injectors are installed before the remap.
So again, in theory, there isn't any reason this wont work aswell as a full cam and pully set up from a leading company, just a milder road use version and anyone who knows what a ZS180 is like, giving it 215-220bhp will put it in a different league.
What are your thoughts.
Should run this one past 
