Opinions on Head work

[Gareth@Willall]

Ok I need some guidance here.

Looking at getting my heads ported and I am looking at two options. Getting my current heads CNC ported in Adelaide and using my existing 918' springs. Or getting some swapover stage 1 HIGGINS heads with new 918's?

My springs have 10,000km on them so presumabley they are still ok :confused: ??

The CNC's are cheaper but you get what you are pay for!

Any opinions would be appreciated.

Gareth

[KiWi]

Nathan Higgins in Melbourne does great head work, as im told ;)

Simon

[Gareth@Willall]

Have you tried Nathan Higgins in Melbourne??

Simon

Yeah i am comparing higgins and cnc jobbies.... re read the post :)

[KiWi]

edited, too many VB's again

Simon

[SLE355]

Just to add, how do the C4B's heads compare to the above heads?

[exwrx]

As I understand it, the cnc process ensures consistent, repeatable results. Its a tool. like edit, and therefore the resulting performance will still depend on the skill of the mob who sell the heads.

Higgins obviously has a good reputation, and I dont think you would be disappointed with a head package of his.

I went for harrop's recently released cnc heads. 295RWKW with a 220/224 112LSA cam says to me that they work ;)

[STATIE]

Apparently they're worth up to a full second (or more) over the 1/4 :eyes:

Go with what your TUNA reccomends would complement your package.

[Black VU SS ute]

and what is the cost for this?

[KiWi]

Apparently they're worth up to a full second (or more) over the 1/4 :eyes:

Go with what your TUNA reccomends would complement your package.

so your car went
12.2 with heads and cam
so would you go 13.2 with a cam so im wondering what you would do bolt ons?? :cool: only :stick: feel free to give me a :box: on wed nite

Love you, you know that.

Simon

[AJVXSS]

As I understand it, the cnc process ensures consistent, repeatable results. Its a tool. like edit, and therefore the resulting performance will still depend on the skill of the mob who sell the heads.

Higgins obviously has a good reputation, and I dont think you would be disappointed with a head package of his.

I went for harrop's recently released cnc heads. 295RWKW with a 220/224 112LSA cam says to me that they work ;)

What are the harrop heads worth?
Cheers

Alex

[Gareth@Willall]

Apparently they're worth up to a full second (or more) over the 1/4 :eyes:

Go with what your TUNA reccomends would complement your package.


hmm 10.8 for $1600 I dont think so hehe. We have devised a plan of attack that should get my slow POS down the strip quicker :lol:

[STATIE]

so your car went
12.2 with heads and cam

1st (and a bit) time out in 35 degree heat and no traction on street tyres and full weight with a full tank of juice and my dog ate my homework YES :nopity:

so would you go 13.2 with a cam so im wondering what you would do bolt ons?? :cool: only :stick: feel free to give me a :box: on wed nite

Better bring your body guards again :bash:

Love you, you know that.

Simon
:lol:.............

[STATIE]

Seriously :rolleyes: how much do a set of heads go for and what do you get for your money?

[Gareth@Willall]

Seriously :rolleyes: how much do a set of heads go for and what do you get for your money?

$880 for the pair in Adelaide. Higgins wanted $1800 odd for hand ported ones. Apparantley a second down the strip!

[STATIE]

$880 for the pair in Adelaide. Higgins wanted $1800 odd for hand ported ones. Apparantley a second down the strip!

Yeh - but there must be differing levels of porting/polishing - valve sizes - valve springs( :lol: )etc as lately I've seen everything from 11.2 to 13's on basic??? head cam packages.

Is the $1800 for Higgins Stage 1?
What are full house ones worth?
Or is it an hourly rate plus parts?

[Bully]

Hmmm thats a bloody big price difference!!!!
Gareth Was that your car on sat LS1VX???
Was going to come & say g'day but went home early about 8, was feeling a bit crook.
So what was your best time of the day??? I think you were running 12s early on, which is pretty impressive.

[MNR-0]

Statie you're not thinking what I think your'e thinking? :burnout:

[KiWi]

Hey.......... arent AFR heads worth $5500??

Thats the price for the Higgins mid to high 11's package :D

Gareth, no doubt your decision will be a wise one,

Simon

[Gareth@Willall]

Hmmm thats a bloody big price difference!!!!
Gareth Was that your car on sat LS1VX???
Was going to come & say g'day but went home early about 8, was feeling a bit crook.
So what was your best time of the day??? I think you were running 12s early on, which is pretty impressive.

Yeah thats mine. Was having a few issues with a new part we were testing which did NOT work hence the flat 12's! Best so far is 11.85. Coulda gone better if I wasnt testing something but hey thats racing!

Gareth

[Sid447]

Ok I need some guidance here.

Looking at getting my heads ported and I am looking at two options. Getting my current heads CNC ported in Adelaide and using my existing 918' springs. Or getting some swapover stage 1 HIGGINS heads with new 918's?
My springs have 10,000km on them so presumabley they are still ok :confused: ??
The CNC's are cheaper but you get what you are pay for!
Any opinions would be appreciated. Gareth

Need to ask,

for the port volume and flow number details for any validated aftermarket cylinder head. Then you are able to make a detailed comparison.
Normally look for the highest flow, within the smallest port volume.

[Gareth@Willall]

Need to ask,

for the port volume and flow number details for any validated aftermarket cylinder head. Then you are able to make a detailed comparison.
You need the highest flow within the smallest port volume.

Nathan was saying something about the port volume on CNC's being bigger to accept the tool and they dont work quite as well.......

[exwrx]

What are the harrop heads worth?
Cheers

Alex

Approximately $2200 exhange or $2500 outright for the bare heads. :)

217cc chamber volume.

[AJVXSS]

Approximately $2200 exhange or $2500 outright for the bare heads. :)

217cc chamber volume.

Thanks mate :D Was wondering where I can find out more about these heads. Im going for a similar pakage to what you've got, the idea of a small/medium sized cam, heads and 300 rwkw sounds good to me! :cool: Who did the work for you mate?

cheers

Alex

[exwrx]

Thanks mate :D Was wondering where I can find out more about these heads. Im going for a similar pakage to what you've got, the idea of a small/medium sized cam, heads and 300 rwkw sounds good to me! :cool: Who did the work for you mate?

cheers

Alex

Monaro Performance Centre in Thomastown. PM me if you want further info. :)