It costs 480 bux to do this 2 my intake manifold? is it worth it or is onpol's method better or just as good whats the deal

http://www.extrudehone.com/pwrfloprice.html

 

The extrude hone process is MUCH better.

 

like how much gain am i going 2 see over onpols method vs. extrudehoning

also does onpol just enlarge the ports and match the gasket or does he do work 2 the inside of the runners?

 

OnPol does not "do" the work. There is a machine shop that does the work, it just happens to be near him.

The machine shop bores out the TB/IM interface opening, Gasket matches the IM/Head interface and mildly enlarges the ports, and he also lighly polishes the last 6" of the intake runners.

BTW...the price you quoted is incorrect. The Price should be $375. (4 cylinder aluminum EFI....$375). If you want them to gasket match, that does add to the cost, and you must provide them with a gasket.

On a 100% stock engine the OnPol modified BTB and BIM combo was good for 3.5 HP and 3.2 Ft Lbs of torque. It should show bigger gains with a CAI, but the only test done was with the stock airbox with the resonator removed.

In theory, the Extrude Hone'd intake manifold would show bigger gains, but as of yet, no one has done it, and no one as dyno'd it.

[ March 10, 2002, 05:49 PM: Message edited by: Random ]

 

4 Cylinder Aluminum EFI 395.00

Level I Processing
Includes a thorough processing and inspection of your part to provide a linear surface finish to maximize airflow.

COST — 4 Cylinder Aluminum EFI 395.00

LEVEL II PROCESSING
Includes Level I Powerflow Processing service plus gasket matching for Intakes, Heads, etc.

COST — Add $80.00 to list cost for each component.


Maybe im reading it wrong or the price has changed recently but from what im gathering its 480 bux to do an IM with gasket matching

 

Nope, I read it wrong, you are right $395.

The $80 is for the gasket matching, bringing you to $475 plus shipping.

And that still does not include boring out the opening to the Intake Manifold/Throttle Body interface, however, you could probably do that part yourself, just make sure that you do not get any metal shavings inside the IM, or if you do, make sure you wash them out.

My IM plan is to have Onpol do his work, minus the runner polishing, then having Extrude Hone do the interal work, then ceramic coating the IM inside and out. The inside of the IM would be flow coated, the outside and IM/Head interface would be coated with a thermal rejection coating. When done, it's going to be close to a $1000 manifold.

 

is it worth it to do all that

 

I dunno if it is worth it, but I'm going to try.

 

wouldnt u be better off spending that 1000 bux upgrading the pistons/Rods/Turbo in ur car and running higher boost than spending all that $$ on ur IM

 

I'm doing that too!