cams

[afcbadam]

can the cams from the mg zt 190 be fitted in to the zs 180. been told you can do this but you might need the ecu aswell. may be a cheaper alternitave to piper cams but with similar gains???

[KevG]

Cams and ECU are required, plus some other stuff too IIRC!

[shroonie29]

I think the 180 ECU should be able to handle the 190 cams,it can cope with Pipers afterall.(may need a tweak on the map).
Should be easier to install than the piper aswell as they are in a set position for fitting,aftermarket ones generally are not

[afcbadam]

also just read on xpf that the zt uses a larger throttle body than the zs. anybody heard this? i thought they were the same? that could be a gain in hp if thats true. would zt 190cams give as much gain as piper 270 cams?

[stamford]

TB's should be the same afaik, the 160 has a smaller one I do believe. I think the inlet cams are the only difference along with the timing.

[Dave ZS-X]

who says the 190 has different cams .
I have the orginal mgr release brochure and it listed engine spec differences as better induction ,free'er flowing manifolds and exhaust and different map in the ecu .The zt only made 187 bhp ,a zs makes that with just induction and exhaust so what were the zt cams doing if it had different ones ........absolutely squat diddly is what,lol .
Throttle bodies are exactly the same.

Dave

[talkingcars]

180 and T16 tubby use a 56mm throttle body, 160 uses a 52mm, 1.4 uses a 48mm.

[stamford]

I only mentioned inlet cams as that is what I heard elsewhere and had little cause to doubt it, but you never know.

[Maxxed_Ross]

A friend of mine had 190 cams and ecu fitted to his 180, apparently they give a bit more low end torque but that's it

Alot of work for mot much gain IMO

[XPCobra]

who says the 190 has different cams .
I have the orginal mgr release brochure and it listed engine spec differences as better induction ,free'er flowing manifolds and exhaust and different map in the ecu .The zt only made 187 bhp ,a zs makes that with just induction and exhaust so what were the zt cams doing if it had different ones ........absolutely squat diddly is what,lol .
Throttle bodies are exactly the same.

Dave

SO why is their different timing tools for the 2.5 180 and 2.5 190?

[XPCobra]

who says the 190 has different cams .
I have the orginal mgr release brochure and it listed engine spec differences as better induction ,free'er flowing manifolds and exhaust and different map in the ecu .The zt only made 187 bhp ,a zs makes that with just induction and exhaust so what were the zt cams doing if it had different ones ........absolutely squat diddly is what,lol .
Throttle bodies are exactly the same.

Dave


The cams might not be 'racing cams' as such with bigger lift and longer duration, but with possibly a shorter overlap to help with low - rpm power?

[Maxxed_Ross]

SO why is their different timing tools for the 2.5 180 and 2.5 190?

I think the theory is that with the ZT being a bigger car the timing was different to give better torque.

Something I'm having checked when my timing belt is replaced, as I think my timing is slightly out - as last rolling road day KevG got more power than me with almost identical mods. Apparently the timing margin for error on the KV6 was 10% either way, so that could potentially be causing the drop

[Supercharged_Z]

I think the theory is that with the ZT being a bigger car the timing was different to give better torque.

Something I'm having checked when my timing belt is replaced, as I think my timing is slightly out - as last rolling road day KevG got more power than me with almost identical mods. Apparently the timing margin for error on the KV6 was 10% either way, so that could potentially be causing the drop


The timing on a kv6 is very very rarely spot on, either half a tooth either way. its basicly impossible to do it 100% for some reason. some have been known to be timed up as 160 zt's.

Lots needs to be taking into consideration for rollers, each car is different, and engines different also, but things that would affect the rollers are, tyres, tyre pressure, gearbox oil etc.

The KV6 ZT runs the same cams as the ZS, the air intake on the ZT is a lot better than a STD zs, also the injectors run slightly different, but the main thing is the map being different to the zs.

Ross

[RalphG]

The ZT190 does have different cams. The ZT180 (KV6 sports auto) & ZT160 (2.0L KV6) use the same cams as the ZS180.

[XPCobra]

The timing tools for the 180, 190 and 2.0l all seem to be different

and i thought 160 zt's were 1.8 turbos?

[RalphG]

Some of the ZT160s are 1.8T K4s and some are 2.0L KV6s. Confusing, I know.

[Dave ZS-X]

The ZT190 does have different cams. The ZT180 (KV6 sports auto) & ZT160 (2.0L KV6) use the same cams as the ZS180.

well i have heard that before ralph but no ones ever given anything concrete.However i assume you have been inside a few kv6's so im willing to take your word for it.

Dave

[afcbadam]

Some of the ZT160s are 1.8T K4s and some are 2.0L KV6s. Confusing, I know.

the zt 160 is either a 1.8T or a 2.5 v6. the 180 and 190 are both 2.5 v6. the difference between the 160 v6 and 190 v6 is the cams and the mapping of the engine

[XPCobra]

the zt 160 is either a 1.8T or a 2.5 v6. the 180 and 190 are both 2.5 v6. the difference between the 160 v6 and 190 v6 is the cams and the mapping of the engine


the 160 v6 is a 2.0l,

tbh most people seem to have an opinion rather than an answer

[XPCobra]

[QUOTE=the injectors run slightly different

Ross[/QUOTE]

how? they can only be open or closed

[RalphG]

the zt 160 is either a 1.8T or a 2.5 v6. the 180 and 190 are both 2.5 v6. the difference between the 160 v6 and 190 v6 is the cams and the mapping of the engine

You are correct! :blush: The 2.0L engine was never used in the ZT, only the Rover 75 :slap:

[Supercharged_Z]

You are correct! :blush: The 2.0L engine was never used in the ZT, only the Rover 75 :slap:

and rover 45

[Supercharged_Z]

how? they can only be open or closed


Impedance

[afcbadam]

the 160 v6 is a 2.0l,

tbh most people seem to have an opinion rather than an answer

the 2.0L v6 in the rover 75 is 150 bhp. the 2.5L in the zt is 160 bhp, 180bhp or 190bhp. trust me i used to own one!

[shroonie29]

http://i63.photobucket.com/albums/h128/shroonie29/ScreenHunter_01Nov172236.jpg
http://i63.photobucket.com/albums/h128/shroonie29/ScreenHunter_02Nov172236.jpg

[afcbadam]

the 2.0 150 is quite low on torque

[shroonie29]

No graph in the Powertrain brochuure,but it tells you the torque figures above