Rebuilding G16A Port and polish

[MOLEMAN]

I got to rebuild my vitara engine soon and have been told getting the head ported and polished is worth doing....is putting a mild cam in worth it as well
Any other sugggestions would be good, on what to do and not to do.
Thanks

[Kitika]

If you have the time or the money to pay someone to do it, it'd be beneficial. I bought a billet steel midrange cam from the u.s of a for cheap but havn't installed it yet. Apparently it'll liven it up a bit and if you have extractors/intake mods/higher compression the greater difference it'll make.

[Green as Grass]

If you have money to burn, go ahead. It will make some difference. Personally I would spend your coins elsewhere. I've just had a head rebuild and it is expensive enough without extra work.
Spend your money on tyres, lockers, bar work, crawler gears, winch, UHF, dual battery kit and lift.

[Kitika]

Spend your money on tyres, lockers, bar work, crawler gears, winch, UHF, dual battery kit and lift.

None of these mods help with keeping up with traffic or making on road driving a pleasure.

[MOLEMAN]

If you have money to burn, go ahead. It will make some difference. Personally I would spend your coins elsewhere. I've just had a head rebuild and it is expensive enough without extra work.
Spend your money on tyres, lockers, bar work, crawler gears, winch, UHF, dual battery kit and lift.

hey, i have the tyres i want, ive lifted it 2" which is all i want to go, got a uhf, got a bullbar which is all i need, dont need lockers as of yet and i have dual battery and my car doesnt get stuck like seirras were i need a winch hahaha

Im working on the 80/20 rule.....80% of the time spent on bitchumen..20% in bush.

so the next mod i need to do is i want to rebuild motor as it has 365 678kms on it and i have just come back from a 900km round trip to Roma and used 5ltrs of oil and is getting sluggiish so its in need of a freshen up.....need to change gearbox as well which i got a spare

ive been told port and polish head is a good mild mod to let it breath better and give it a bit more poke....i was wondering if anyone else has done it and if its worth putting a cam in too....or any other suggestion would be appreciated.
thanks

[Guy]

8 valve or 16 valve ?
8v I would say do it. If possible get it port matched ... or at least gasket matched (ported so there is no missaligment between the intake gasket and the manifold .. either exhaust or intake)
I did mine using a 1.3 head with new valves, keeping the 1.3 intake valves and used 1.6 exhaust valves (a bit bigger). The theory was the 1.3 vlaves will give better low end response due to higher gas velocities and the bigger exhaust valves will allow the spent gas's out quicker ..

Worked for me.


16v already flow very well .. a mild clean up may help but would make very little difference anywhare except the very very top end.

[alien]

i spoke with suzistore here in perth about it when they did mine - they pretty much said the stock g16b and g13bb is as good as it gets, cams etc are as optimised as theyre ever going to be for general use... only if you're planning on racing it etc could you squeeze a bit more out of it (noticably).

spend the money on good extractors and exhaust system.

[MOLEMAN]

G16A 8v carby, ohk i will look into the port matching..makes sense. might stick with the stock cam from wat ive been told by suzukiauto down on moss street just wondering if anyone had put cam in and wat they thought.
that was one of the first thing i did when i got my car was put extractors on will 2" pipe with straight thru muffler
thanks for the feedback