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View Full Version : 2.5 v6 will 3.0 cams fit????


valvercorsa
17-01-09, 06:07 PM
right then fella's ive picked up my 2.5 v6 engine today. its come out of a mk2 astra cabby, i think its a c25xe but dunno how to tell, if it is a c25xe then will 3.0 cams fit in it or am i just better off just aving sum aftermarket one???

thanks mike.
VXandy
17-01-09, 06:12 PM
Hi mike, if it is a c25xe then from what i remember 3.0 ones do fit, you'll know the engine code by looking on the block
Mike
17-01-09, 06:17 PM
Yes they will if yours is an 25XE. May aswell chuck in a ligthened fly whilst your under the bonnet.
valvercorsa
17-01-09, 06:22 PM
well its got a valver one on anyway and ive also got a billet steel one with a paddle clutch but think that may be too light lol its getting the paddle clutch fitted :) gud gud :) cheers
G8WCC
17-01-09, 07:24 PM
the 2.5v6 vectra gsi use 3.0v6 cams as standard
will give you a good power gain too
valvercorsa
17-01-09, 08:27 PM
cool think i sorted some now :) just wanted to make sure before buyin them cheers guys
burgo
18-01-09, 07:24 AM
in regards to the flywheel there no such thing as to light with these big engines. the cams are a well known cheap upgrade. im sure there used to be a guide somewhere, possibly migweb??
Saloony
18-01-09, 10:12 AM
If you get the 3.0l cams ditch exhaust ones and get another 3.0l inlet set... vroom vroom
valvercorsa
18-01-09, 12:08 PM
nice 1 cheers guys. ya not gunna do it saloony? ya built redtop on bike carbs same time as me lmao.
valvercorsa
21-01-09, 05:59 PM
do 4 g cams work????
valvercorsa
21-01-09, 07:07 PM
also any 1 no where theres any info on fitting these?
ben lee
21-01-09, 07:14 PM
have a look on vvoc.com they will have guids and moe info on there.

its alot of work to cange them when i did my mates vectra sri canged 2 3ltr cams and 4bar reg it made 212bhp on the rollers standered is about 170bhp
valvercorsa
23-01-09, 05:04 PM
did you do all 4? to G cams?
ben lee
23-01-09, 07:24 PM
not sure what cames he used theni it was just the sandered 4 cams out the 3ltr.
Ernie
23-01-09, 07:52 PM
g cams are what are in the gsi's and they come from a omega 3ltr.
I know as helped out with the engine change on mine as it had a rod through the block when i got it.
http://img.photobucket.com/albums/v617/chunny01/vectra/17022008679.jpg
http://img.photobucket.com/albums/v617/chunny01/vectra/15022008672.jpg
http://img.photobucket.com/albums/v617/chunny01/vectra/VecrtaGSInewdoors011.jpg
http://img.photobucket.com/albums/v617/chunny01/vectra/stopovershow003.jpg
Sorry for all the pics.
valvercorsa
23-01-09, 09:39 PM
nice :) dont worry about piccy mate becos i like to see tidy vectra's :)
http://i2.photobucket.com/albums/y27/valvercorsa/DSC00465.jpg
valvercorsa
23-01-09, 09:46 PM
have a look on vvoc.com they will have guids and moe info on there.

its alot of work to cange them when i did my mates vectra sri canged 2 3ltr cams and 4bar reg it made 212bhp on the rollers standered is about 170bhp

carnt find guide :confused:

why is it allot of work mate??? surely its just out with the old in with the new :D



its just setting up im worried about lol heard there isnt a lot of piston to valve clearance.

does anyone no if there is any gains when porting these heads??
Jack
23-01-09, 09:50 PM
heard there isnt a lot of piston to valve clearance.
Try none. The GM V6 is a crappy interference engine :mad:
Sloth
23-01-09, 10:02 PM
yep. NOM NOM NOM!
valvercorsa
23-01-09, 10:10 PM
carnt be that bad
Sloth
23-01-09, 10:21 PM
they eat everything as soon as the belt or tensioners go. ive seen em where its gone at idle and its fooked everything
Ernie
23-01-09, 10:22 PM
They do sound nice tho lol
valvercorsa
23-01-09, 10:30 PM
they eat everything as soon as the belt or tensioners go. ive seen em where its gone at idle and its fooked everything

yeah 1 of mates did that it pulled the rubber seal off the belt cover and mashed engine but thats why am not just chucking it in am finding all info out first :) i have had redtops mostly and never ever had a v6 so think its time to try something new :) if it ends up dead then i just LET it :)
Sloth
23-01-09, 10:49 PM
if it ends up dead then i'll just saab it :)

edited for you!
Jack
24-01-09, 12:33 AM
Same engine, plumchops lol
Sloth
24-01-09, 12:57 AM
eh? b234r and a c20 let?
valvercorsa
24-01-09, 06:01 PM
think he means vaux v6 and saab v6 lol
Saloony
24-01-09, 09:06 PM
I wouldnt V6 a nova unless it was in for doing some 1/4mile runs. I had a V6 cav auto and i put the cams in and the difference was huge to it. And such an easy thing to do.. well was to me, being a mechanic and all lol
valvercorsa
25-01-09, 09:59 AM
should be piss for me then if you can do it lol been an engine reconditioner and builder lol

need sum info on fpr is the 3.0l one a 3.8bar?????
Saloony
25-01-09, 10:13 AM
should be piss for me then if you can do it lol been an engine reconditioner and builder lol

need sum info on fpr is the 3.0l one a 3.8bar?????

Haha... remember to get that sand off from inside the rocker cover this time... or did i just make that up
valvercorsa
25-01-09, 10:18 AM
hahahahahaha ok u got me there, but in my defence i did spend over 2hrs with a steam cleaner and several tooth brushes lol

but i learn't something new that week :D
Saloony
25-01-09, 10:27 AM
hahahahahaha ok u got me there, but in my defence i did spend over 2hrs with a steam cleaner and several tooth brushes lol

but i learn't something new that week :D

Yeah... get a proffessional to do your work lol
valvercorsa
25-01-09, 10:32 AM
no learn from your mistakes and build it better next time :)
Jack
25-01-09, 07:22 PM
think he means vaux v6 and saab v6 lol
Yeas, sloth fails at realising this is a thread about the V6 lol

I have a feeling the cams may be different in the B308i but then surely that would require a different ECU and I believe it uses the same one as an X30XE
valvercorsa
25-01-09, 07:54 PM
lol i have got the cams now anyways so they better go in lol