1.8E engine tuning

[Kadettek]

Emm can anyone tell me how can i tune this engine?and how much could i get from it?and could i enlage it's displacement?and what other parts would fit from othe opel engines to make it give more horsepower?

[e99]

i ran an old cavalier sri for a couple of years with the same engine
i swapped the 1800 engine for a 2ltr bottom end out of a 1990 sri cav matched it to the 1800 head (skimmed and ported)and used the 1800 injection system
i used the 2ltr head gasket 1800 timing belt + stretch bolts
it was a very fast car rolling roaded at 125bhp
not very fast flat out(about 120-125 mph) as i used the mk1 astra gte short g/ratio box but it would beat most cars (non turbo) to 90mph
if you want a higher top end then try the longer g/box from the 2ltr gte

[Kadettek]

emm i wanna make something like 150-170hp...... where could i find out all about this engine and also 2.0 8v and 20.16 engine to the last bolt!!!?everthing!!!so that i could use like bigger valves,bigger injectors.....maybe even a tubine if possible (but the i wanna much more hp)....i wanna do extreme!! for low budget(mostly from those 3 types of engines,but it has to stay 1.8E engine block!!!)
Can i change displacenet to 1.9l,and which pistons could i put then in?to fit?

[Kadettek]

i also have F16 gearbox.....but there is no indication which one is it CR or WR

[e99]

bolt in a 20xe motor 150bhp standard then tune it up

[Kadettek]

ehh.....emm i wanna bust honda freaks!!!!this is the engine that suppos to kill 2.0 engines at accelerations!!!any i hawe it in my garage completlly dissmantled......and i wanna tune it......but i can't find any info!!!!danm!!!need help here....on fuel injection sytem (it's limitations.........which one is it.....)everthing!!!can i fut any parts form other opel engines??like 1.9l manta GTE??can i fit those pistons in??my 1.8E engine??(of couse dispalcement will be enlarged to 1.9)

[e99]

c20let engine transplant will beat most cars
you will struggle to get the power you want from the 1800 unless you turbo it
manta gte parts are no good because the engine was CIH(cam in head) not OHC(overhead cam)

[Kadettek]

just a thought......well if anyone can help me please do!

[dathers]

easier and cheaper to sell your 1.8 and buy a 2.0 16v for it,they are 150 bhp as standard.Why waste money on a 1.8?

[Kadettek]

beacouse i got it for free and i wanna learn on it!!!!I am gonna have 2.5 v6 fitted soon.....so don't worry!!1.8e will be use to smash those VTI hondas on drags!!!
That's why i asked if i could fit others opel parts into this engine!!

[Matheus428]

Put turbo in it.. 1 Bar, intercooler, 276 cam..


and you cand displacement to 1.9 with 86mm pistons yet..or to 2.0 with 88mm pistons..

or with 86mm crank and 88mm pistons, to 2.1..

[Kadettek]

from 1.8 to 2.1???but is engine block strong enough???for some extreme action???And where could i then get pistons,rods,crank,head???from which engines??

[Kadettek]

well anybody??

[Matheus428]

yeah man.. its the same block.

Big Blocks Vauxhall:

1.8- 84,8mm bore X 79,5mm stroke
2.0- 86mm bore X 86mm stroke
2.2-86mm bore X 94mm stroke
2.4- 87.5mm bore X 100mm stroke(Brazilian made, only for pick-ups)


The 1.8 and 2.0 are the same block, don't have diferences. But the 2.2 and 2.4, have more lenght the block, for use long rods, but is only this the diference.
Then you can use crank, and rods of 2.0(86mm), and put a especial pistons of 88mm, you will have about 2.1 of cubic capacity.

[nrj]

You can get that power:

Rebore to 1.9
Major headwork with large ports/valves
Group A Headgasket
Wild cams (near on full race not just fast road)
Strengthened bolts all round
lighten and balance everything
48mm throttle bodies

don't 4get to sort brakes on this car V6 calipers will be good.

[Kadettek]

emm 1.8 and 2.0 block are the same???OHC.....then i can rebore it to 2.3l??can i use pistons from any other opel/vaux egines??

[Matheus428]

You mean 2.3 litre with 86mm stroke, only increasing the bore? Well, its not possible, need bigger than 90mm pistons..
For 2.3 litre, you need 94mm crank(from 2.2, in this case, you will need 2.2 block), and 88mm pistons...will result 2.3 litre engine.

[Kadettek]

emm didn't VOKL do 2.3l conversion?
Well what cen i do with my 1.8E engine? i am a bit confused now.....what parts can i use from other opel engines??and yes what's the maxsimum that i can bore this 1.8E Block? to 1.9??

[Matheus428]

You need understand, have 3 ways for increase the cubic capacity of engine:
1º way: only in bore(bigger pistons)
2º way: only in stroke(bigger crank)
3º way: both, bore and stroke


Your engine block, can go to 2.0 with the 3º way. Put the 86mm crank(from stoke 2.0 Vauxhall engine), and 86mm pistons(from stoke 2.0 vauxhall engine too). Or, to 2.1, with 86mm crank of 2.0 Vauxhall engine, but with 88mm especial pistons(like SBD made).
With your stock crank, and 2.0 pistons(86mm), you can go to 1847cc. With 88mm pistons(and your stock crank) you can go to 1934cc.
My opinion, is you increase using 86mm crank(you will need the rods too), and 86mm pistons, from stocks 2.0 Vauxhall engines. Is the cheaper way. 88mm especial pistons, is not cheap.

[Kadettek]

ooo that was well writen!!!! tnx m8.......really!!!
Can u tell me about valves???in the same sence like you told me about pistons....

[Matheus428]

Well my friend..i don't know if have diferences in Brazilian Vauxhall engines made and in UK made. But here in Brazil, the 2.0 head have 43mm inlet valves, and 39mm exhaust valves. 1.8 head i don't know the size of valves, but i think is 41mm inlet and 37mm exhaust.
Is easier you put 2.0 head too, here in Brazil, Vauxhall 8V heads, is so cheap, and i think there, is cheap too. And you can work in it, for get better flow, is cheap and easy(if you get informations and correct tools), for improve flow in your head. I increased about 13% of power and torque in my engine only in head.

[Kadettek]

aha....em thta means i can put 2.0l head on my 1.8(1.9l)block?
how about inlet mainfold???will it fit then???and with all that changes a custo programed ECU is a "must be" then right?
How about injectors??can i put them from into 1.8,from 2.0 8v or 2.0 16v ???does anybody have info on cc of those injectors from 1.8E to 2.0 16 engines???

[Matheus428]

Yeah, you can fit 2.0 head in your 1.8 block(is the same of 2.0 block). Manifold is the same too. Maybe the 2.0 have larger inlets, and bigger TB, need see the model of your fuel injection. About the ECU, if is digital ECU, you can re-map the chip for new mods, but if is analogic(Le-Jetronic), you can't do it..
And the injectors, yes, you can use 2.0 8V or 2.0 16V injectors. The stock cc, is about 220cc/min in 16V each injector i think, but i don't have 100% certain.

And good lucky in mods!

[Kadettek]

hmmm i have LE-Jetronic.......what to do now?would it work yust to cahnge ECU?????(i don't have computer box yet...)aha 16v has 220cc injectors?can you get info for2.0 8v??and 1.8 8v???
What is TB???aha inlet should fit then.....what about exaust mainfold???same??

[Rumble]

AHHHHHHH 18E. i got 122 BHP and 116 lb-ft (with 1.3 exhaust)
1/4 mile in 16
MONEY EFFECTIVE.

I got a webber 32/34 mounted it to a varijet 2 manifold with adapter plate. And a machanical dizzy.

200 quid tops 110 BHP allmost guaranteed.

Top tip. Loose the injection its totally ********. Raced a standard 18E (injection) astra of same type as mine. Totally gubbed it twice

If you want you can go the different head route, (I am trying that just now) But it is not a cost effective way of producing a reliable power increases. and is certainly not easy to do. Needing space and tools etc..