C20NE - tunable ?

[Liam1805]

Got myself a c20ne engine to put into my corsa. It has done around 100k so I'm going to give it a full service, timing belt change and also a new water pump while its out of the car. I have bought this engine because I WANT it so don't want anything like redtops mentioned. I went in my mates corsa the other day with this engine fitted and its rapid. I want to know what sort of tuning mods can be done and what sort of gains will be achieved. I have done some research but all I find for these engines is the turbo conversion as its low compression. But I would prefer to keep it n/a power.

What will bike carbs be like on this engine due to the lower compression ?? (I have the carbs already)

What will it be like if I fit the 20seh camshaft ??

What bore exhaust is best for these engines ??

I also have 20xe injectors, any point in fitting these if I don't go carbs ??

Also I heared these engines suffer with a restrictive inlet system (AFM) what can be done to get around that ??

Any other advice will be great thanks.


Liam

[Nemesis]

What will bike carbs be like on this engine due to the lower compression ?? (I have the carbs already)

Not as fast or economical as an XE

What will it be like if I fit the 20seh camshaft ??

Not as fast as an XE

What bore exhaust is best for these engines ??

Standard bore is fine, as the tiny cylinder head can't flow much air compared to say an XE. A 4 branch manifold would be a good start though.

I also have 20xe injectors, any point in fitting these if I don't go carbs ??

That's a great idea when combined with 20xe head, manifolds, ecu and loom

Also I heared these engines suffer with a restrictive inlet system (AFM) what can be done to get around that ??

Throttle bodies or carbs remove the inlet entirely.... or just fit a bigger head to begin with, say one with 16 valves.

Any other advice will be great thanks.

Don't eat yellow snow
There are no girls on the internet
Never trust a man with a beard

[Liam1805]

What was the point in that. I'm after help not sarcasm. You have just made me hate the xe even more. If I wanted a xe I would have bought one. Always one

[mk2astraturbo]

go ne why be the same as everybody else

[Liam1805]

go ne why be the same as everybody else

Thanks. Which is exactly why I went for a engine like this. I like 8 valve engines.

If I wanted to know about redtops my title would be that but its not, I want advice on the c20ne.


Liam.

[lee-170]

sum one like me at last thank the lord

i have a c20ne with ported + polished head 1.8e inlet manifold + Twin choke throttle body ported polished and matched to head which is a 122 bhp carlton head ported and matched exhaust manifold 2inch stainless exhaust from down pipe back 2.0 16v Ecotec injectors and 2.9 bar fuel pressure on ajustable reg with a bmc carbon air box and chipped ecu it goes very well im also looking into carbs tho but fuel econ is out the window

Just Incase any one else doesnt understande we all no a XE Is faster standard but me nor anyone else who asks for 2.0 8v tuning advice wants one they want tuning advice for a 8v

[Liam1805]

Lee I'm glad you posted mate. Also glad there's another like me out there. Do you notice any difference with tho mods you have done mate. What's the reason behind using the 1.8 inlet then mate. If bike carbs will have reasonable gains/improvements then ill be more than happy to fit them. Also thinking of fitting the 20seh camshaft as they are wild I'm led to believe


Liam.

[lee-170]

i also have a 130 cam forgot to mention that yea mate i have notice a substantile gain with those mods the 1.8 inlet with twin butterfly of a mk1 astra has 60% more surface area than a standard 2.0 throttle body and the inlet also has shorter runners am greatful for people like you mate really am

[daveb948576]

Go on 8v lovers lol

I had 1 in my nova and my calibra, Both cars are in projects but both have gone now (sadly)

The nova was rediculously quick, it had a piper 285 degree cam which after 1500 rpm the car just went in to crazy hyperactive mode and left me pinned in the back of my seat, it had an f13 gearbox lmao lmao which lasted well and didn't give me any problems it also had a 3 litre Carlton throttle body, there's a guy on eBay that breaks senators that does these for about £20 it also had x20xev pistons to raise the compression, that car was fast enough and quite good on fuel.

My calibra had a x20xev bottom end with and 8 valve head stuck on top of it, it started to det after 10000 miles but probably wanted a service lol

There is plenty to read on tom sticklands website but he's now gone for an even better option over the c20xe and bought a BMW which to be honest I can't blame him as the xe is now getting a bit old.

You could always argue back with the guy that's saying more valves are better if that's the case then why isn't he saying fit a v6 with 24 valves? The mind does boggle!

[lee-170]

mine also is still on the 1.4 spi astra box lol

[screamer69]

bung a turbo on it and you will be fine

fook a xe or a let !!!!

[16vmini]

yea . slap a turbo on it ..... but dont waste time putting it in a vauxhall ....

YouTube - Final run of the day , 8v turbo mini , flames popping

[testosterone1]

and the point of a mini is?????????????????. You produce a engine with good figures then you put it in a dinky toy

[Liam1805]

Go on 8v lovers lol

I had 1 in my nova and my calibra, Both cars are in projects but both have gone now (sadly)

The nova was rediculously quick, it had a piper 285 degree cam which after 1500 rpm the car just went in to crazy hyperactive mode and left me pinned in the back of my seat, it had an f13 gearbox lmao lmao which lasted well and didn't give me any problems it also had a 3 litre Carlton throttle body, there's a guy on eBay that breaks senators that does these for about £20 it also had x20xev pistons to raise the compression, that car was fast enough and quite good on fuel.

My calibra had a x20xev bottom end with and 8 valve head stuck on top of it, it started to det after 10000 miles but probably wanted a service lol

There is plenty to read on tom sticklands website but he's now gone for an even better option over the c20xe and bought a BMW which to be honest I can't blame him as the xe is now getting a bit old.

You could always argue back with the guy that's saying more valves are better if that's the case then why isn't he saying fit a v6 with 24 valves? The mind does boggle!

I like that actually made me giggle. Did you just have the 285 degree cam fitted or other mods too. Will the 20seh cam act similar to this as they are cheaper.

bung a turbo on it and you will be fine

fook a xe or a let !!!!

I would prefer to keep it n/a mate but a turbo conversion may be on the cards. Im unsure yet. Would love to fit bike carbs but not sure how well they will suit this engine.

[Fusionboy]

liam u say f**k the xe and let. lol wait till mines done ha

[Liam1805]

liam u say f**k the xe and let. lol wait till mines done ha

Haa I know I'm sick of hearing about xe and let's they are everywhere even up with us lol. I'm going to be different my boy

[Fusionboy]

i havn seen a let up with us.i know lol im winding u up lol. i hope its dry tomoz and sat lol.

[Gaz86]

TBH the only benefit of the 8v vs the XE is the price tag, a free engine will always appeal to the cost concious out there but I'd soonere spend an extra £150 on a valver and get the same power that the 8v will produce after £500.

that said I do like the torqueness (sp) of these lumps and there is an amount of potential, the thing is you can only go so far, and then you move on to the XE/LET.

[tinxy]

and the point of a mini is?????????????????. You produce a engine with good figures then you put it in a dinky toy

dinky toy that weighs nothing and handles well umm ??

why make a c20let with 500hp and put in a nova

because he wanted to

just like why you claim you and your mate put a rover sd1 v8 rover engine in a mgb



ohh and Liam Ive got a set of seh pistons you can have if you want them if you want to pay for the postage

James

[daveb948576]

My nova engine had:

Ne block
Xev pistons and rods
285 piper cam
3 bar fuel pressure
3 litre throttle body

That's about it and went ok really,

It was quite shocking lol it didn't cost me much so didn't loose out really,

I'm the type of person that couldn't care less if I've got a BOV going ppppssssshhhhhttt or a screamer pipe sounding like a blowing exhaust, the car was just a bit of fun because at the end of the day cars don't last forever so what the heck, build it, thrash it, brake it and then throw it in the bin lmao

[tinxy]

so what the heck, build it, thrash it, brake it and then throw it in the bin lmao

haha like your thinking

[Liam1805]

dinky toy that weighs nothing and handles well umm ??

why make a c20let with 500hp and put in a nova

because he wanted to

just like why you claim you and your mate put a rover sd1 v8 rover engine in a mgb



ohh and Liam Ive got a set of seh pistons you can have if you want them if you want to pay for the postage

James

You will have to message me so I can reply then mate as I'm mostly on my phone and its a nightmare to message.

I don't want huge over the top power etc. Would just like a rough idea of how helpfull bike carbs will be with torque etc, how better off will I be with a she camshaft and that.


Liam

[Liam1805]

Just been looking in total vauxhall and it states that throttle bodies for the c20ne engine will gain you 25hp, so shouldnt i be looking at that sort of figure for bike carbs or greater torque level rather than power. Also how much gain will the 20seh camshaft gain me along with the carbs, and exhaust straight through.

[daveb948576]

You might get 145 if your lucky

[Liam1805]

You might get 145 if your lucky

That would suit me. Dont want silly power. Been offered seh pistons and camshaft, if i use these to raise my compression ratio will i need to run the 20seh ECU. Also how strong are the current c20ne rods and crank. What sort of horse power are they capable of ??