help on forging please

[IMAQL8]

hey guy as some of you know i have watugt's old ek civic..
it runs pretty good and has decent power but now im looking at putting some pistons and rods so that it is a little more reliable and also so i can get a little more power...
okay so its dyno'd at 220kw@wheels but i want to squeeze about 250-260kw@wheels..

so key questions:
what pistons and rods should i get please be specific.. also price aswell please

and should that be okay to just buy pistons and rods... being my internals are standard rite now..

oh just incase you dont know the setup.. its gen3 b16a, gt3540, and other custom bits..

thanks guys in advance..

[BTLF3D]

use cp pistons/eagle rods (i would probly go for a little higher compression ratio than the normal 9:1 which most people use, maybe a 9.5:1 aslong as you will be using a good tuner!), plenty of people use them here and in the states, i can get them for you if you want, pm me.

Also if your doing a full build, would be good to get some ARP headstuds and Main studs, and use Genuine honda parts (waterpump, gasket set, oil pump, etc)

[IMAQL8]

you have been pm'd cheers man

[Built4Speed]

Heres something to think about from someone very knowledgable in the import scene. I was asking for advice on what compression ratio to run in my race car 9.0:1 or 8.3:1...

Definetly don't get the 9.0:1 Wisecos, the 8.3:1 ones will be far better on pump fuel.

The yanks have this persistent belief that higher compression ratio spools up the turbo much earlier.
This is complete BS.
All higher compression does is give a small amount more off-boost torque, barely noticeable between 8.3 and 9.0.
Not worth the much lower power potential on pump fuel.

I actually believe that a lower compression ratio will spool the turbo a bit sooner due to the expansion ratio being lower, thermal efficiency being a bit lower (more energy out exhaust) and the total displacement being larger. (due to larger chamber volume)
There is evidence to back this up too, but the masses still don't believe.

Its definatly something to think about

[phonix]

Originally Posted by Built4Speed

Heres something to think about from someone very knowledgable in the import scene. I was asking for advice on what compression ratio to run in my race car 9.0:1 or 8.3:1...

Its definatly something to think about

Who was your source for this info? 8.3CR is quite low, lower than most factory turbo setup's (circa 9.0 CR).

[Built4Speed]

I think the guy would probably prefer his name wasnt shared, ill ask him. But be assured he really knows his stuff, he builds engines and has a 10s evo.

Evo 1-2 have a comp of 8.5:1
Evo 3 have a comp of 9:1
R32 GTR Skylines have a comp of 8.5:1

[americ_ian]

9.5:1 will be fine

800hp guys run 11.5:1

[FLYRYD]

i reckon even 10:1 ratio is fine.

i'm running about 9.3:1

[Built4Speed]

Originally Posted by americ_ian

800hp guys run 11.5:1

Not on pump gas tho...

[americ_ian]

Originally Posted by Built4Speed

Not on pump gas tho...

yeah only 600whp on pump gas

[Built4Speed]

Originally Posted by americ_ian

yeah only 600whp on pump gas

Thats impressive post some specs up

[FREEZN]

its not uncommon in the states...its all in the tune.

i agree...a set of 9.5:1 CP's with eagle rods be best bet for you

[IMAQL8]

cheers guys i got a price from ronnie as i told him what im after in regards to what i want out of it and hes quoted me $3500 for pistons/rods and everything else needed to have them fitted all installed...

then i will have to go to mark at tricky to get my car re-tuned so that i can hopefully get about 250kw - 260kw @ wheels...

my injector duty cycle is only at 50% rite now so they have somemore in them so hopefully mark can work some magic once my motor is a little more stronger to handle it...

i just dont think standard internals can cope with 220kw@wheels for too much longer.. better to be safe than sorry i guess, plus i have a spare block at home so may aswell get it built lol..

[doo0T!doo0T!]

I'm 8.3:1 as well, and went from 1590cc to 1627cc with the lower compression.

[Hayce]

Probably dosnt need to be said but far be it for me to keep my mouth (fingers?) shut... Make sure you get H beam rods!
Pistons are much for much really CP's are closer matched per piston than JE's but you'd still want to check em.

I looked at 9.6:1(?) pistons but the risk of getting a muppet tuner just doesn't stack up against the benefits of a small increase of static compression.

[doo0T!doo0T!]

Originally Posted by Hayce

Pistons are much for much really CP's are closer matched per piston than JE's but you'd still want to check em.

x2 dont just throw them in the holes! Get them weight matched at somewhere respectable like Auckland Dynamic Engine Balencers or Bob Mead.

Same goes for rods, remember the big manes in pistons are all high numbers mass produced, and are advertised as weight matched +/- 1gm but I've never seen it work out like that in practice. Especially OEM rods, the distribution on my D16a7 rods and slugs was more than 10gms.
And with my H beams the distribution was 3gms

I trust smaller manufactures like Endyn who actually hand make the pistons from Wisco blanks and during the hands on process are physically weight matched as a set, not just grouped and sorted by weight bracket like they do with the larger manufacturers.

[IMAQL8]

okay cool i'll remind ronnie on this issue

[doo0T!doo0T!]

Originally Posted by IMAQL8

okay cool i'll remind ronnie on this issue

He'll already be well aware

[Hayce]

LOL yeah dont say anything... be like telling the pope how to pray

[IMAQL8]

haha okay i wont remind him then lol..
cant wait now.. i just picked up my spare block off him in the weekend and now i'll be bringing it back to get the work done in a few weeks...

should i get a block guard fitted aswell??

[FREEZN]

id talk to ronnie since hes building your block for you. im not sure if he reccomends running one or not. personally i wouldnt run one

[nemesisteg]

ronnie recommended and installed one in my car

[BTLF3D]

Originally Posted by FREEZN

id talk to ronnie since hes building your block for you. im not sure if he reccomends running one or not. personally i wouldnt run one

x2

[IMAQL8]

Do you guys no the benefits and cons of having the block gaurd oppose to not having one in...

to be honest the only thing i could think of is that it will keep the floating sleeves more rigid... lol i'll ask him but i also want others opinions aswell esp if they have or have not gotten them for a reason...

[BTLF3D]

search about them. theres plenty of info on here and www.honda-tech.com