fitting large port head to small port engine help please

[barnsley]

thinking about fitting a large port head to my small port auq engine am i right in thinking that the large port it vvt and the small port is not so do i just swap my cams and tensioner over so i can run the large port not vvt

 

[goble]

do you have a bigger turbo?????

 

[barnsley]

im ihi a the min poss going bigger

 

[goble]

and youve got the most out of what your running??

 

[barnsley]

no not mapped hard fitting some rods and pistons and thinking poss a large port is possible

 

[goble]

try cams first.
http://www.catcams.be/800x600/mainframe.htm?english

 

[barnsley]

they are going in but looking to fit the large port

 

[The MoffMeister]

so you want it rergardless lol

only improve flow a bit wont it?

 

[barnsley]

ya the head will be off so was thingin why not

 

[goble]

how much power do you want then??????
personally i wouldnt bother, you just want to be polishing exhaust ports and sanding inlet and making a knife edge of the v in the intake,set of decent valves,springs and lifters, cams , rods, pistons and that will be enough.

 

[barnsley]

need more power than i have

 

[goble]

350?

 

[barnsley]

can get 350 when ive fitted the rods might been going 400+ and a different turbo

 

[goble]

surely that enough for fwd road use before it get unreliable??

 

[ibizacupra]

surely that enough for fwd road use before it get unreliable??

nah......... more more more



my motors been VERY reliable

 

[barnsley]

nah......... more more more



my motors been VERY reliable

lol thats what i was thinking

can anyone tell me is there any trouble i changing largeport

 

[elrao]

Am pretty sure people have done it on their TTs, I was planning on fitting a large port head to my APX 1.8T engine, but decided not to in the end as I am selling up and moving on.

No indications that there would be any problems. If you are getting a larger port head then you need the larger intake manifold to get the most out of it, will also help lower the spool up time with a big turbo (so I was told!).

 

[RickC]

you can flow a small port to have more flow than a large port, obviously flow a LP and you will have even more

 

[Feel]

Really? Have you seen the difference between the two.

Anyway, proper port and polish is going to cost waaayy more than a large port head, I think.

The big turbo boys, the ones who have actually done this, have posted loads of info on this in the past.

Loads of info on the vortex, also.

 

[RickC]

Really? Have you seen the difference between the two.

Anyway, proper port and polish is going to cost waaayy more than a large port head, I think.

The big turbo boys, the ones who have actually done this, have posted loads of info on this in the past.

Loads of info on the vortex, also.

yes we have the flow readings at work, will have a look tuesday when im back at work