Zasker1

Anybody done this yet, I have found a few shops that do it in CA but am not sure what the gains would be in a TSX, I am guessing around 10-12 max:

JG Engine Dynamics:
Redline series All motor race / street / mild turbo
JGH 3001
Port work Redline series full port and polished 500.00 $
Intake valve guides tapered included in port work
Exhaust valve guides Tapered down included in port work
Valve spring retainers T 7075 Aircraft grade aluminum 90.00 $ max rpm 9500
Valve springs JG single 110.00 $ max lift 12.5mm
Valve job Full radius intake and 3 angle exhaust 150.00 $
Intake valves Swirl polished 40.00 $
Exhaust valves Swirl polished 40.00 $
Valve seals New 20.00 $
Head surface Milled or surface included in valve job
Chambers Polished included in port work
Cleaning Hot tanked 20.00 $
Total 970.00 $

ImportBuilders:
IB Spec head porting
Very advanced Honda heads. From 280-320 CFM. Flow charts available for an additional $100.
$875


DPR Racing:
Street/Strip Port and Polish and Competition Valve Job
This includes porting intake and exhaust bowls and short side radius
Match intake and exhaust 36 mm into ports
Competition mult-angle valve job
Hand lapped & vacuum tested valve seats
Lap deck and gasket surfaces
Deburr, clean, and reassemble
Starting at $750 (Milling $60)

STAGE IV
Competition Port & Polish
Competition multi-angle valve job
Hand lapped & vacuum tested valve seats
Lap deck and gasket surfaces
Set springs to customers specs
Deburr, clean, and reassemble
Polish Combustion Chambers
Back-Cut Valves
Radiused Blend Seats
Starting at $1050.00 USD (Milling $60)

Dan Martin

IMO the money could be better spent elsewhere. You're not going to get 10hp on an otherwise stock head with just a port and polish. 3hp would be more realistic.

dzuy

nope. no one has done it.

Dan Martin

I've been reading a few posts over at crsx and they all agree it's completely pointless. There's just not enough airflow through the engine to make it worthwhile. If you did an aggressive turbo setup then it might make sense.

CJams

So nobody has done this yet? Had a buddy with a '90 CRX that did it and picked up some good gains from it. I thought we might be able to do the same. Guess not.


Who wants to be the first thousand dollar test monkey?

Zasker1

I am up for it but I would like to see what the gains would be first. If I could get 12hp it would be worth it.

JTso

iTrader: (2)

That's a lot of work and money for 12hp IMO...

CJams

12hp.....You gotta pay to play I think it might be worth it if it put you over the 200hp at the wheels mark.

itrhybrid

iTrader: (1)

Not to mention time for the mod. In my opinion, I'd wait until a decent cam package was out before doing this.

Zasker1

cam does no good without a new ecu. A good PP job can be had for about 1k. a good cam package like tada is like 3k without labor

itrhybrid

iTrader: (1)

Hence the term "Package", including ECU, retainers, etc.

joerockt

This thread reminds me of Gran Tursimo for some reason.

vwong

I've got some gains with cams (still on stock ECU) in my Prelude. But then I also did more than just cams.