MG ZR: Cams & Maps

[Toms306]

Original gti cat is about £380 so thats stupidly expensive unless they have one of them silly twin cat things (doubt it at that age)

Hmm, just checked servicebox.... 1.8 16v cat £700 + vat.... GTi cat is only £560 + vat oddly!

ZRs do use two cats, but the top one (on the mani) isn't a 'proper' cat. The scrappy don't give much for it anyway!

[lolsteve]

Imo gearbox ratio plays a big part. I think you need to look at a 6 speed conversion plus power or a fair bit of power alone around the 200 mark

Don't know of any 6 speed options for this engine though :/

Do they have a close ratio box? I had the same engine in a Coupe and it wasnt.

1st=40mph
2nd=70mph
3rd=100mph
4th=125mph

Apparently so in the adverts, think it was part of the whole zr is sports model. Since the steering rack is different so the turning circle is a pile of wank
Yours would have been a 143 engine no?

[Anton]

Yeah it was, but honestly not that much different.....

[Jonny b]

Don't mean to offend bud! But I don't think ιt will ever be what the title of the thread is!, I have been in a couple of these ɑnd I don't think they are anywhere near claimed power, ɑnd puttting a stock 6 next to a stock one of these, handling wise ιs ludicrous, ιts a nice car don't get me wrong!! But Barry mcguigan would never beat Tyson

[devils_fuel]

Barry mcguigan would never beat Tyson

He would if Tyson's arms were tied

They're not that quick really, I had a non turbo one before I strapped the turbo on and I wasn't impressed..with a turbo though...wow!

[procta]

Yeah it was, but honestly not that much different.....

correct, the "160" block is stronger than the 143 block, I think its either the head, pistons or the valves.
also the ecu is different and the injectors. more to do with the emissions.

---

Procta leave the posh rover 200 alone we don't all want to crumple up into a tin can when we crash *cough* metro *cough*

steve i think iam gonna piss on your bombfire here,

https://www.youtube.com/watch?v=my6nnePPzDY

these are 1.4 16v metros by the way. catching a few posh 160 bhp rover 200s
so the shell is still at fault

[Poodle]

I think that's decided it tbh Steve, turbo it is.

[Anton]

This is really bugging me ha. Want to go out in to see how it is.

Been looking at stats and this weighs the same as my Rover Coupe, in standard form they are known to do 0-60 in the low 7's. I was always under the impression that the 143's made a bit more and the 160's made a bit less. Not much difference in them at all...

[lolsteve]

Don't mean to offend bud! But I don't think ιt will ever be what the title of the thread is!, I have been in a couple of these ɑnd I don't think they are anywhere near claimed power, ɑnd puttting a stock 6 next to a stock one of these, handling wise ιs ludicrous, ιts a nice car don't get me wrong!! But Barry mcguigan would never beat Tyson

That's why I've picked the 6' to go up against, as standard the 306 is a pretty good all rounder and I wanted to see if with some suspension/chassis work I could get the brit to beat his French rival. for example the additional rear anti roll bar and looking into seeing if I can use the uni lab for machine work. As I say in terms of power it's going to have to be the rolling road day to see what it's pushing, if it is the claimed power I have no idea what i'd do.

Barry mcguigan would never beat Tyson

He would if Tyson's arms were tied

They're not that quick really, I had a non turbo one before I strapped the turbo on and I wasn't impressed..with a turbo though...wow!

Was that the t series engine? or did you turbo a k series?

I think that's decided it tbh Steve, turbo it is.

I would love to but hearing a lot of people saying that turboing a k series is a lot of work when you could just swap out and put in a t series turbo. That and I'm interested in the vvc system if I could get it to keep working despite the extra power it would be fun to show up a tyre r and his veeeeteeecccc. Although we know that will never happen

---

Yeah it was, but honestly not that much different.....

correct, the "160" block is stronger than the 143 block, I think its either the head, pistons or the valves.
also the ecu is different and the injectors. more to do with the emissions.

---

Procta leave the posh rover 200 alone we don't all want to crumple up into a tin can when we crash *cough* metro *cough*

steve i think iam gonna piss on your bombfire here,

https://www.youtube.com/watch?v=my6nnePPzDY

these are 1.4 16v metros by the way. catching a few posh 160 bhp rover 200s
so the shell is still at fault

can a crisp packet catch up to a brick basically? the posh 200 shell is at fault but its so darn comfy I cant give it up

[procta]

I will give you at its more comfy.

[lolsteve]

Bit of an update:

Nothing new added but currently working on designing rear strut brace/ sourcing a rear arb. Just trying to get the university labs to make me a bracket without admitting it's not a uni project.
And also in regards to the lack of power it could be due to the discovery of having a 56mm throttle...which is from a t series turbo engine.
It seems that bigger is not better and changing the 52mm throttle to a 56mm causes high end power loss and apparently if you open the throttle fully you have less acceleration than when 3/4 open. on power graphs people claim it kills the power heavily after 6k rpm whereas the 52mm holds strong til limiter
The only benefit people seem to claim is more torque below 2k but then im never down that low so I won't miss it

[Anton]

Oh dear, heard the story so many times!

[lolsteve]

with people putting on 56 throttles?

[Anton]

Yeah. The 160 had a slightly larger body than the 143 so people upgraded it. Only added like 1-2bhp but throttle response improved.

Then all the chavs in their ZR's started changing to the turbo body and it was proven to actually lose power. Search around but theres a guy who tested all three back to back.

[samass]

So, all this effort to try and beat a '6, while not beating a '6 yet....

and while looking like, well, an MG driver...

When you buying a '6?

[lolsteve]

Yeah. The 160 had a slightly larger body than the 143 so people upgraded it. Only added like 1-2bhp but throttle response improved.

Then all the chavs in their ZR's started changing to the turbo body and it was proven to actually lose power. Search around but theres a guy who tested all three back to back.

Yea, hoping to get a 52mm in time for the rolling road day. Might see if I can do a run with it on and one with the 56mm see the difference.

So, all this effort to try and beat a '6, while not beating a '6 yet....

and while looking like, well, an MG driver...

When you buying a '6?

Never, don't get me wrong the 306 is a nice car but ..I'm just bored of them, dull interior and that. Really didn't put a smile on my face when driving the hdi, maybe a gti6 would be different but i'd rather try something else. maybe a type r...

But don't you worry sam, this will beat a gti6. After all I managed to overtake poodle at combe ;D

[procta]

steve, you need to change the shell! I have told you that many a time, The posh 25 just isn't up to the power of the vvc what you need is a proper rover like what I have

[lolsteve]

The shell stays. May bot he a proper rover but id prefer if i wasn't so involved in being a crumple zone if i crash

I am contemplating making it more lightweight in the future , thanks to some pushong from ladystee to make it more race car

[procta]

The shell stays. May bot he a proper rover but id prefer if i wasn't so involved in being a crumple zone if i crash

I am contemplating making it more lightweight in the future , thanks to some pushong from ladystee to make it more race car

That's the 80s and 90s for you
the mgcc is at Snetterton this weekend.

[Piggy]

So, all this effort to try and beat a '6, while not beating a '6 yet....

and while looking like, well, a old man in a rover driver...

EFA

there isnt much flow difference between 80/100% open anyway with the butterfly, so makes sense that the high flowing engine doesnt want such a huge intake.

same with exhausts, too fat and you get good low down grunt, but tend to kill top end speed/power

[lolsteve]

The shell stays. May bot he a proper rover but id prefer if i wasn't so involved in being a crumple zone if i crash

I am contemplating making it more lightweight in the future , thanks to some pushong from ladystee to make it more race car

That's the 80s and 90s for you
the mgcc is at Snetterton this weekend.

Ah so much going on this weekend, too far though sadly. would be near £70 in fuel for me

So, all this effort to try and beat a '6, while not beating a '6 yet....

and while looking like, well, a old man in a rover driver...

EFA

there isnt much flow difference between 80/100% open anyway with the butterfly, so makes sense that the high flowing engine doesnt want such a huge intake.

same with exhausts, too fat and you get good low down grunt, but tend to kill top end speed/power

Yea, low down grunt is nice and all but the k series is a revvy lil bastard that enjoys bouncing off the limiter. like a kid pumped on up e number jumping on a fat chick .. or something

[Piggy]

...or something!

[Poodle]

Flol, stop poncing and get it mapped already. :p

[Piggy]

supercharged.. then mapped

[306Dan]

Just drop a k series turbo in it, £250 mapping from z and f and your looking around 195 - 200 bhp ( although mine ran 190bhp but I pulled the engine out of a high miler)

[lolsteve]

The crowd are demanding a remap then just seems so expensive when compared to the hdi mapping of £60 or whatever

Engine swaps aren't ideal for me since I have a communal parking space this year and a tight budget since my landlord asked for 6 months worth of rent in one go

[Scott]

Then it's settled, strip it to f*ck

[lolsteve]

Ladysteve has been telling me to get buckets and strip it out for a little while now..

[Scott]

Winning, get it done!

[Anton]

Not worth remapping...