Cam gears and pulley for 3s-gte - Toyota Nation Forum : Toyota Car and Truck Forums

Zero turbo · 01-14-2006, 09:09 PM

so I whant to buy underdrive pulley and 2 cam gears for my 3s-gte

(didnt buy the cam shafts cuz i heard that until +275hp they are not necesary).So i was thinking what can I espect with these upgrades will they make my turbo spool faster ,rpms go faster,more low end torque ??.I already can get a unorthodox underdrive pully just whanted to know if its worth it in a turbo car THX.

***MR2Jedi*** · 01-15-2006, 12:50 AM

lightening the rotational mass the crank has to move is great for any engine. especially in the flywheel where there is the most weight. it will rev faster and free up more power to get to the ground. not an increase in HP but just releasing it to the wheels.
i have Unorthodox 8lb flywhel and underdrive crank(3 oz.)/alt. pulley set on my Spyder. i think it's a great mod. I noted quite a difference.

JekylandHyde · 01-15-2006, 06:06 AM

Cam shafts, when properly set up, can make a difference at any HP level.
They are never "necessary."

I would not suggest using a lightweight crank pulley.

***MR2Jedi*** · 01-15-2006, 07:25 AM

Quote:

Originally Posted by JekylandHyde

Cam shafts, when properly set up, can make a difference at any HP level.
They are never "necessary."

I would not suggest using a lightweight crank pulley.

May I ask why?

JekylandHyde · 01-15-2006, 09:31 AM

Camshast - when properly degreed can add torque faster and even give more of it.

As for the crank pulley, the stock pulley includes a harmonic balancer. Without that, there is nothing controlling the harmonics in the engine. It affects the internal balance of things. It's there for a reason. Race cars get away with lightweight pulleys because they are looking for every last little bit of performance and they do not care about longevity/reliability of the engine ... as long as it lasts the race, they can (and often do) rebuild.

For a regular street car looking for more grunt, lightweight pulleys are cheap, but not worth any long-term ill affects.

NESW20 · 01-15-2006, 12:54 PM

i have a lightweight flywheel, lightweight crankshaft, lightweight clutch, some of the lightest 3SGTE rods out there, the lightest pistons, and the TOYOTA CRANK PULLEY. i actually spent more money on the OEM pulley than i would have on a lightweight piece, simply because i'd like to keep my engine healthy.

as far as cam gears, there are plenty to choose from. AEM, HKS, and ATS make them. i believe Fidanza makes a set as well.

-Mike

Zero turbo · 01-15-2006, 06:28 PM

Ok so underdrive pulley will make my MR2 unreliable.Well in that case I am only going to buy the cam gears and cam shafts.What are the best cam gears and cam shafts for the 3s-gte.Thx

JekylandHyde · 01-15-2006, 06:49 PM

I'm using the ATS cam gears and the HKS 272 intake and HKS 264 exhaust.

Zero turbo · 01-15-2006, 06:58 PM

^ok well i will try to get those THX J&H.and will cam shafts effect turbo in a good way?/ thx

.

Zero turbo · 01-15-2006, 07:10 PM

I love the price for the cam gears only $200 the set

and a $50 dollar rebate if you send your stock ones but they dont ship them over here to Puerto Rico

.So i will have to buy other ones so what are some good cam shafts besides the ATS i also love the price on the thrtle body $65

.THX

JekylandHyde · 01-15-2006, 07:16 PM

Where does it say they do not ship to Puerto Rico?!

$200 for cam gears is afine price and then you get $50 back.
You are not going to find a better deal on adjustable cam gears.

Their price on HKS cam shafts are the same as everyone elses.

The $65 if not for a throttle body, it is for the throttle body inlet.

Zero turbo · 01-15-2006, 07:52 PM

^ when i did my order and was ready to choose country in the list it said U.S. , Mexico ,Canada etc.... but no P.R. and Yes the $200 price on cam gears is really good in fact the BEST!!! and is the throtle inlet usefull.I will try again to see if i can buy the gears i already have the money so...Whant them

.

JekylandHyde · 01-15-2006, 07:54 PM

I would think, for shipping purposes, that Puerto Rico would considered the U.S.
... you do use a U.S. zip code - correct?

Zero turbo · 01-15-2006, 08:01 PM

OK nm Puerto rico is part of the U.S

so I am going to order them 1st thing in the mornning THX J&H

***MR2Jedi*** · 01-15-2006, 08:49 PM

Quote:

Originally Posted by JekylandHyde

Camshast - when properly degreed can add torque faster and even give more of it.

As for the crank pulley, the stock pulley includes a harmonic balancer. Without that, there is nothing controlling the harmonics in the engine. It affects the internal balance of things. It's there for a reason. Race cars get away with lightweight pulleys because they are looking for every last little bit of performance and they do not care about longevity/reliability of the engine ... as long as it lasts the race, they can (and often do) rebuild.

For a regular street car looking for more grunt, lightweight pulleys are cheap, but not worth any long-term ill affects.

OK, Understood. i didn't realize the 3sgte had a harmonic balancer. that definately needs to stay.
When installing new cams(HKS 264 in.& ex), are adjustable cam gears neccessary? or is it just better for degreeing?. i have been sitting on these cams for a year now. but will install them sometime soon..