C20xe + c20let block differences

[s14a]

Hi lads
i have a c20let engine with head gone pourous
i have a coscast c20xe thats perfect

are the blocks the same
just want to see can i bolt the turbo gear onto it without opning the block
or are pistons etc different

thanks

[Jonlem]

Pistons are different, turbo oil return needs drilling on the xe block, apart from that they are identical

[Graeme]

Why would you want to change the block due to the head going porous?

[philip]

Easy enough to do the porous mod if your handy on the spanners, have drills, etc to sleeve the head. Be a shame to split one engine for abit of time in fixing porous head.

[Mazz]

Pistons are different, turbo oil return needs drilling on the xe block, apart from that they are identical

Isn't there just a blank that you unscrew for the return?

http://www.astra-mk2.com/0ddball/pressure_senders/sender03b.jpg

[Johnny A]

Isn't there just a blank that you unscrew for the return?

http://www.astra-mk2.com/0ddball/pressure_senders/sender03b.jpg

No :( Drill and tap needs to come out

[Mazz]

bugger :(

[Spudly]

Why would you want to change the block due to the head going porous?



This, bang the XE head on the LET block, swap the exhaust cam only, (i.e. remove the XE exhaust cam and fit the one from the LET, but leave the inlet cam alone) and youve fixed your engine and with the addition of a vernier pulley, and a rolling road, gained about 7-12 bhp iirc!

[s14a]

Why would you want to change the block due to the head going porous?

have a excellent low milage coscast c20xe
have a pourous c20let and unsure of condition of rest

[s14a]

This, bang the XE head on the LET block, swap the exhaust cam only, (i.e. remove the XE exhaust cam and fit the one from the LET, but leave the inlet cam alone) and youve fixed your engine and with the addition of a vernier pulley, and a rolling road, gained about 7-12 bhp iirc!

thats exactly what i will do
where is best to get the pulley?
thanks for your help guys