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[jim_c]

Hi, Is it worth fitting the 3.0 cams into the 2.5 v6? Ive been told you get a nice little HP gain. Also do you swap the bearing caps from the doner 3.0 aswell?

[feeutfo]

yes. Dont think the caps are needed. Someone will confirm one way or the other no doubt. There is info in, i think the tech info section, to id which cam is which iirc. Saw a thread the other day, said you may only need the exhaust cams, again, please wait for others to confirm... Anyone?

[markey mark]

yes about 20 bhp from inlet g cams ! dont need bearing caps there line bored with head  

[Kevin Wood]

Bearing caps must be kept with the head they originally came from, in the same position and orientation. They have markings on them so make a note where they were before diassembling and re-assemble exactly as they were. Only the cam shafts should be used from the donor engine.

Kevin

[HerefordElite]

http://www.omegaowners.com/forum/YaBB.pl?num=1152565319

I seem to put this link up once a week, nice work again Mark

[ngrainqey]

oh yeah question about the cams
should you or should you not use the actual pullies from the 3.0 or take them off and put the 2.5 pullies on?
was thinking about the timing thats all - i dont know if they're exactly the same or not

[Kevin Wood]

The pullies are the same so you can use either.

Kevin

[ngrainqey]

oooo goody
cant wait to get my cams!
sposed to have them already but...hmmm
i'll have to let you know when i get them

[MutantCav]

Member on here is supposed to be sending me some for you mate, but not heard a word since I stumped up the money and not seen any posts by him since...looks like I will have to sort out some alternatives for you...I'm on it

[Marks DTM Calib]

You need both inlet and exhaust cams on the X25XE engine to get full effect unlike the C25XE from the cav/calibra lump which already has the 3.0 exhaust cams fitted.

Cam bearing caps must remain with the head as they are line bored.

Do not use pattern cam seals as they always leak. In fact re-using the roigianl seals has worked 100% for me so far.

The sprockets are the same on 2.5 and 3.0 engines.

[amba]

I recently did the "camshaft upgrade" for 3.0ltr and have been most impressed with the performance difference.The engine has noticeably more power and will accelerate rapidly even from motorway speeds,so for the work involved it is well worth the effort.
I did mine at the same time as a cambelt/tensioner replacement so the extra bit of work was minimal,although to be totally sure I did replace the camshaft seals,along with the obvious camcover seals and rings.
As others have advised all 4 cams should be replaced but retain the original bearing caps but these must go back as removed in the same place and direction.
Good luck with it..you will smile when it is done...I did.

[Matchless]

You need both inlet and exhaust cams on the X25XE engine to get full effect unlike the C25XE from the cav/calibra lump which already has the 3.0 exhaust cams fitted.

Cam bearing caps must remain with the head as they are line bored.

Do not use pattern cam seals as they always leak. In fact re-using the roigianl seals has worked 100% for me so far.

The sprockets are the same on 2.5 and 3.0 engines.

Dont they just  

[jim_c]

Cheers guys, another christmas holiday prodject comeing up.

[ngrainqey]

Cheers guys, another christmas holiday prodject comeing up.

haha! im planning on it being my project for this month

[jim_c]

Bit more help please guys, Cam numbers A3 &A6 are exhaust and numbers G1 &G5 are inlet. Do the numbers 3,6 & 1,5 refer to anything important?