1NZ port & polish - Toyota Yaris Forums

jkt_lovely · 02-11-2009, 11:18 AM

I've done Port and Polish + 3 angle Valve Job on my Yaris....
DEFINITELY didnt lose any low end...
Felt more starting 2.5K rpm onwards....

Reason for doing it: Labor is cheap over here... unlike USA... cost only around $250...
and its WAY more feel - able than Muffler... Intake... bla bla bla...

Tamago · 02-11-2009, 11:41 AM

Quote:

Originally Posted by jkt_lovely

I've done Port and Polish + 3 angle Valve Job on my Yaris....
DEFINITELY didnt lose any low end...
Felt more starting 2.5K rpm onwards....

Reason for doing it: Labor is cheap over here... unlike USA... cost only around $250...
and its WAY more feel - able than Muffler... Intake... bla bla bla...

do you know Alexander Rungkat?

turboecho2005 · 02-12-2009, 08:33 PM

The 1NZ (and 1ZZ and 2ZZ for that matter) have far to big of a stroke.... you need a more square bore and stroke.

destroke the 1NZ with custom rods and pistons and offset grind on the crank and shave a bit of the top of the block off ;)

Then you can make some serious power but you'll also lose a bit of displacement. But well worth it for the performance gain. But not worth it in the wallet.

02-12-2009, 08:33 PM	#3
turboecho2005 Drives: 2005 Toyota Echo Join Date: Oct 2008 Location: Ottawa, Ontario Posts: 177	The 1NZ (and 1ZZ and 2ZZ for that matter) have far to big of a stroke.... you need a more square bore and stroke. destroke the 1NZ with custom rods and pistons and offset grind on the crank and shave a bit of the top of the block off ;) Then you can make some serious power but you'll also lose a bit of displacement. But well worth it for the performance gain. But not worth it in the wallet. __________________ Project Slowtop - Twin Engine 4AGE Blacktop Vitz - Twin Turbo - 503hp 1987 Nissan Maxima - 40,000 original miles - Slammed 1991 Isuzu Impulse RS AWD Turbo - approx 250hp - Winter Beater 1989 Isuzu Imark RS - Mint Condition - 0 rust - 100% factory :) - Summer Cruiser - 100% restored 1986 VW Jetta Wolfsburg - 120,000km - Mint condition. TDI swap in progress

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02-11-2009, 11:18 AM	#1
jkt_lovely I've made a post! Drives: Yaris S Limited Join Date: Feb 2009 Location: Indonesia Posts: 1	I've done Port and Polish + 3 angle Valve Job on my Yaris.... DEFINITELY didnt lose any low end... Felt more starting 2.5K rpm onwards.... Reason for doing it: Labor is cheap over here... unlike USA... cost only around $250... and its WAY more feel - able than Muffler... Intake... bla bla bla...