reconstruction Z22SE (the jarama awaits me)

#1
Hello everyone, the first happy year!
Sorry if you do not understand something of what I say, do not speak English, and I have to use the help of a translator.
I tell you, my z22se astra is already close to 200,000 kilometers, I think the chain tensioner is warning that it can start, and the water pump seal loses me in most cases. I asked in one of my trusted workshops, and the change of the water pump next to the distribution reached 550 euros.
and there what I tell you, my new project is going to be the complete reconstruction of my z22se, and I need your help.
I have all the pieces located, but thanks to this forum I have discovered modifications to be able to extract something more from this engine.

The first thing: Talk about b207r, why that piece? What is achieved with the installation of that piece?
The second: The head gasket of the z22se is 0.5, but on the spare parts page you can find up to 0.35. I have seen that you can place the cylinder head gasket of the b207r which is 0.4. What do you recommend?
The third: for more than I read about the elimination of balancing axes, I do not understand the installation of the bushings, does anyone with an idea of Spanish, or someone with an explanation, help me? I feel that question, but the translations into Spanish of the forum are gross

My idea is to leave pistons and cranks as standard, changing all the bearings and segments. Remove balancing shafts, replace head gasket for larger CR, enlarge and polish intake and exhaust ducts. eliminate AC, and change the intake and exhaust manifolds. The car will be used to run mainly.
soon upload photos of the car, since I have not uploaded any.

the project is serious, and I could use all the help possible, because this engine here in Spain is very little known, and very undervalued.

If you want to contact me for anything, you can find me on facebook like Isaac Hortelano Bravo, instagram: bravo816trs, and whassap; 657750488
Thank you very much, and let this project go ahead.
 

evocarlos

Stupid Bollocks
Staff
#2
hello
we use the saab b207/z20net engine as its a ready available engine with a few extra parts to help with performance (oil cooler,under piston cooling) not really required for a N/A engine mainly forced induction turbo or supercharged. most z22se parts are bolt on to the b207 as there based off the same engine platform to add there not a direct replacement for the z22se and wont work with an outright swap

the b207/z20net head gasket is the thickest its triple layer and 0.68mm iirc
the z22se gasket is 0.5mm triple layer
the z22yh is the thinnest (higher CR) its dual layer and thinner than 0.5mm

there is a guide on this forum for removing the balancer shafts permanently something vocky wrote a long time ago mainly its cutting the tip of the shaft and knocking the rear bearing in 7.5mm to block the oilway its a working a proven way there are many engines running like this without issue

ive recently changed the pistons in my z22se to z22yh pistons this increases the CR (compression ration) from 10.0:1 to 11.0:1 when using a z22yh gasket
some pictures here
https://z22se.co.uk/threads/evos-astra-coupe-2-2-star-silver.26114/page-6#post-1257715

i hope that google translate make sense of what's written here lol
would be nice to see a project log of you progress on this forum :)

translated from google

Hola
utilizamos el motor saab b207 / z20net ya que es un motor disponible con algunas piezas adicionales para ayudar con el rendimiento (enfriador de aceite, refrigeración por pistón) que realmente no se requiere para un motor N / A principalmente turbo de inducción forzada o sobrealimentado. la mayoría de las piezas z22se están conectadas al b207 ya que están basadas en la misma plataforma del motor para agregar allí no un reemplazo directo para el z22se y no funcionarán con un intercambio directo

la junta de culata b207 / z20net es la más gruesa de su triple capa y 0,68 mm iirc
la junta z22se es de triple capa de 0,5 mm
el z22yh es el más delgado (mayor CR) su capa doble y más delgado que 0.5mm

hay una guía en este foro para eliminar los ejes del equilibrador permanentemente algo volador escribió hace mucho tiempo principalmente cortando la punta del eje y golpeando el cojinete trasero en 7.5mm para bloquear la vía de aceite está funcionando de manera comprobada hay muchos motores corriendo así sin problema

Hace poco cambié los pistones en mis pistones z22se a z22yh, esto aumenta la CR (ración de compresión) de 10.0: 1 a 11.0: 1 cuando se usa una junta z22yh
algunas fotos aquí
https://z22se.co.uk/threads/evos-astra-coupe-2-2-star-silver.26114/page-6#post-1257715

Espero que el traductor de google tenga sentido de lo que está escrito aquí jajaja
sería bueno ver un registro de proyecto de progreso en este foro :)
 
#4
I think it will be difficult for me to find the pistons of the z22yh, anyway, I have time to find them, however, do you think that with the cylinder head gasket of 0.35 I will be able to reach CR 11: 1?
 

evocarlos

Stupid Bollocks
Staff
#6
i dont think it will get to 11.0:1 cr with just the gasket maybe 10.5:1 cr

the manifold you linked to is not a direct bolt on and needs to be cut and rewelded to suit not worth the hassle
 
#9
if someone had data on the volume of the combustion chamber could make calculations and find out the compression ratio that could be achieved with the cylinder head gasket of 0.35, however, so they are worth the z22yh pistons on ebay I would not mind buying them . Regarding the collectors of the chevrolet, (4-2-1) asked if the part that fits directly into the stock is worth, I know that with the 2 part would have to modify
 

evocarlos

Stupid Bollocks
Staff
#11
Why not? Does they use really cheap steel? Most of the stainless steel on ebay, rust after a month or so.
304 and 306 stainless steel will rust after its had a few heat cycles that manifold is made with plain steel much lower heat tolerance if you were going to spend £250 it would at least have to be stainless steel construction and not mig welded :)
 
#12
if someone had data on the volume of the combustion chamber could make calculations and find out the compression ratio that could be achieved with the cylinder head gasket of 0.35, however, so they are worth the z22yh pistons on ebay I would not mind buying them . Regarding the collectors of the chevrolet, (4-2-1) asked if the part that fits directly into the stock is worth, I know that with the 2 part would have to modify
Combustion chamber is 53.2cc.
Piston to deck height 0.45mm
 
#13
304 and 306 stainless steel will rust after its had a few heat cycles that manifold is made with plain steel much lower heat tolerance if you were going to spend £250 it would at least have to be stainless steel construction and not mig welded :)
Fair enough. But can we agree that even the stainlesssteel manifold, is not that going to live as long as the original castiron
 
#16
[QUOTE = "vocky, post: 1258001, member: 13"] solo raspe la cabeza por 1 mm y use una junta de cabeza estándar z22se si quiere CR 11: 1 [/ QUOTE]



If it is not necessary to rectify the cylinder head, it would be best to install a cylinder head gasket of 0.4? since the standard board of the z22se is 0.50
 
#17
Good morning guys! Right now I start buying the parts necessary for the reconstruction of my 2.2 NA and I have a few questions to ask you

1st, how do you see this distribution system? I would appreciate if you give me your opinion in other brands with more or less the same price
https://www.ebay.es/itm/232277646942

2nd, regarding the head gasket ... the car has never had a heater, so I do not know if I should plan something. I want to get a CR of about 11: 1, and they sell the 0.35mm cylinder head gasket (the standard is 0.50mm), do you see it too low? In the event that you do not have to plan, could I use that cylinder head gasket? I do not want to be bitten by a crank. What would you do?

3º the porting and polishing of the head ... what should I do? I've been reading in the forum that the ones that have to be made bigger are those of escape, while those of admission only have to sand the foundry lines. Any recommendation?

4th elimination of balancing trees ... can you pass me a link with a well represented work? I still do not have very clear what I should do (the translator does not translate well what you write to me and I think enough confusions)

5th, elimination of the aa / cc ... can it be done? the project is destined to a racing car fundamentally, and I spare the AA / CC system


6th diameter of exhaust line, what should I put? right now I'm wearing the serial downpipe (I think it's 50mm), the intermediate one of an astra g 1.7 dti and a silent sports rear. I think the diameter of the entire line does not reach 50mm. My thought is to put 55mm, since I do not want to lose lows, what do you recommend?

Sorry for the tirade but I enter very occasionally in the forum because I'm pretty busy with the studios and others, for summer I'll be more active! Thank you very much in advance ! Regards!
 
#20
Hola este Navarra.
Yo llevo la modificación de los árboles y la línea de Astra H GTC 150 que es de 55 entera y al ser turbo desahogado bien y suena bien.
Catalizador anulado en 55 mm.
Caja de cambios de Zafira y volante motor aligerado.
 
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