is head work worth it? - Toyota Nation Forum : Toyota Car and Truck Forums

jesse0880 · 05-30-2007, 08:54 PM

i currentlly have my motor pulled apart for a full rebuild right now and i took the head and block to the machine shop for inspection and cleaning. im getting the block punched out .020 over but the mechanic there said he could do some headwork (valve grind, port and polish, ect.), to really get the head flowing. my problem is that i'v read that any type of headwork such as this is not worth it on the 3sgte. is this true? would i just be wasting my money? i'v seen dyno's with just cams ( 267's) and they made a world of a difference so would that be a better route to go?

jesse0880 · 05-30-2007, 08:57 PM

oh yeah, i asked the guy about getting the flow chart of what the head would do and he said i wouldn't get to see it until after i pay for it cause he'll give it to me with the recipt. so i wouldn't be able to compare until then.

tHa kNiGHt FaLL · 05-30-2007, 09:10 PM

absolutety... headwork w/ cams is prolly one of the biggest performance improvements you can do to any motor.

and w/ the fact you live in Cali... its something a CHP cop can't pop your lid and point out.

its the best route to go if you plan to make some serious power.

jesse0880 · 05-30-2007, 10:15 PM

true that man. i'm currenly running a geddy TD06 turbo. would it work well with the headwork and new cams? or would it not met the head's volumetric needs?

also- can the stock vavle train of the 3sgte be good enough for the hks 267's or do they need to be upgraded?

tHa kNiGHt FaLL · 05-30-2007, 11:09 PM

Quote:

Originally Posted by jesse0880

true that man. i'm currenly running a geddy TD06 turbo. would it work well with the headwork and new cams? or would it not met the head's volumetric needs?

also- can the stock vavle train of the 3sgte be good enough for the hks 267's or do they need to be upgraded?

there is a very specific mathematical process you could do if you want the very best performance and find the best turbo for the motor your building.

i got all the formulas... but you need to get the CFM for the new build. I'd ask the machine shop. there are ways to calculate CFM... but i'd ask the shop so you can get it as accurate as possible. From there you can start mapping turbos to see which one will perform the best throughout the power band.

now cams... i'd think 267 would be a nice setup for a stock block and mild turbo. i would push something like a 278/276 type deal. and if you getting head work done i'd go over sized ferrai (sp?) valves.

cause at this point your pushing the abilities of building a nice race setup.

jesse0880 · 05-30-2007, 11:19 PM

thats my delimma. when i first started the project, i wanted to stay with a streetable 11 second daily driver. wouldnt 276 cams be a little much? i also read that i would be able to pass the sniff test during smog with 267's. so that is why im leaning towards them. i might take it to LACR and do a couple runs every once and a while at the most.

as far as the turbo situation... i actually just bought that sucker so it will be a while before i even think about up grading.

***MR2Jedi*** · 05-31-2007, 12:36 AM

Like tHa kNiGHt FaLL said, it is definately worth it. It's all about flow. HKS makes a 264 and 272 performance cams. 272 is the wildest and will give you the kinda rough idle with that 'lope' feeling.
A fully built head can take much more RPM's.
Ported and polished, oversized stainless steel ferrea valves, dual titanium springs , titanium shims. then a turbo to match the flow capabilities. Adjustable lightened cam gears help with the degreeing of the cams. Correct flow must go all the way out the exhaust.

jesse0880 · 05-31-2007, 06:41 PM

wow. would i really need to go that extreme to get enough power to hit 11's? 12's even? im running the stock fuel system right now so would it be able to handle that type of demand?

JekylandHyde · 05-31-2007, 06:50 PM

The only head work I would consider is cams and/or ovesized valves.
I would not spend money on a port-n-polish on the 3SGTE.

As you are running the stock fuel system, I'm assuming you are on te stock turbo as well?
If so, I would not venture into headwork unless you are planning on running a bigger turbo.

Good luck,