Why is the 2jzgte so much better?

[figgie]

you missed the point of my reply completely. there's usually a reason why someone would bold part of a post, just an idea..

i'm not going to spell it out for you, but anyone will a 1.5J or a 1J should know what I was getting at.

I know both the jz series along with the uz series.

search supraforums, erin carpenders as stated by MRSUPRA. Once you read those. Get back to me.

actually I am in a good mood today and I am feeling generous.

http://www.supraforums.com/forum/showthread.php?t=339560&page=1&pp=25

what was that about 1jz flowing better than 2jz head?

 

[HommerSimpson]

have you, yourself ever ridden in a car that had 400rwhp much less 500 rwhp?

so because the in thing is that people start jumping off a cliff, you will be next in line too?

Never understood the monkey see, monkey do mentality. :nono:

LOL forgot to say btw.. You obviously dont read my threads as im as far from a follower as there is ESPECIALLY on here.. My car is my own and done MY way and not even close to anyone eles here.. No mokey see monkey do here...

 

[figgie]

LOL forgot to say btw.. You obviously dont read my threads as im as far from a follower as there is ESPECIALLY on here.. My car is my own and done MY way and not even close to anyone eles here.. No mokey see monkey do here...

nah I am not much into build threads. VERY FEW exceptions.

 

[foreverpsycotic]

what was that about 1jz flowing better than 2jz head?

Doesn't the 1jz head have a faster velosity than the 2jz-gte head?

Not to side track, but isn't the 2jz-ge head better for a single setup, with the bigger exhaust ports?

 

[figgie]

Doesn't the 1jz head have a faster velosity than the 2jz-gte head?

Not to side track, but isn't the 2jz-ge head better for a single setup, with the bigger exhaust ports?

it basic Bernoullis principle.

for the a given inner area of W @ X air volume = Y velocity. Reduce the area of W but leave X air volume and Y velocity MUST increase.

http://home.earthlink.net/~mmc1919/venturi.html

basically the java applet shows you what I am describing.

 

[rakkasan]

it basic Bernoullis principle.

for the a given inner area of W @ X air volume = Y speed. Reduce the area of W but leave X air speed and Y speed MUST increase.

http://home.earthlink.net/~mmc1919/venturi.html

basically the java applet shows you what I am describing.

^^=very true. The 1jz head has a higher velocity, but lower volume. With that said, unless you're making massive power, the difference isn't going to be noticable.

 

[tissimo]

Doesn't the 1jz head have a faster velosity than the 2jz-gte head?

yup, to try to give the little 1jz some torque..

 

[tissimo]

how much hp can you get out of a stock 2J as in block factory head and head gasket and pistons and rods and crank....??????????

I've seen ~9.5 on a stock block (i think cams though), 75k miles.. power was probably 750-800whp? down the track, not just on a dyno.. its all in the tune

as figgie said, with a standalone and a good tuner even the stock 7m will handle quiet a bit of power. But few every spend the money where it counts the most.

 

[Dylan JZ]

I know both the jz series along with the uz series.

search supraforums, erin carpenders as stated by MRSUPRA. Once you read those. Get back to me.

actually I am in a good mood today and I am feeling generous.

http://www.supraforums.com/forum/showthread.php?t=339560&page=1&pp=25

what was that about 1jz flowing better than 2jz head?

I read it back then, and I have yet to see technical charts or tables.. however, based on what he found I agree.

But until someone tests it or posts actual proof I'm not going to say one head is better than another. Also, theres the velocity factor.

In any case, both heads arent THAT far off from each other and its not really fun to argue about it, just thought I'd throw out the fact that its not an absolute truth IMO.

 

[shaeff]

about the metal ya i forgot what it is they used in the metal but it helped fix the bhg problem along with metal head gaskets look in to it

I hate to rain on your parade, but the BHG issue on 7M's isn't caused by the metal used in the block, it's caused by the low torque figure on the headbolts.

Which, of course, is remedied by using some ARP hardware, and torquing them down properly...

Before you go spouting off information like this, it's best to have a source for that information, otherwise you look like you're just trying to B.S. us. I'll just throw this out there:

I don't think you have a clue what you're talking about on that matter. I invite you to prove me wrong, and I really hope you take the invitation. I'm very willing to learn, but you MUST be certain about what you're saying.

Not "my brother's uncle's sister's husband's daughter's cousin twice removed told me this.... so it MUST be true!"

Not going to fly here...

 

[Poodles]

At th price, I am not willing to find out.

The Denso pump from the MKIV is more than capable. A HELL of alot more efficent than the walbro and unlike the walbro, it does not fall flat on its face past 75 psi.

Not from what I've seen...

Trying to find anything on SF is worthless these days though, so I'm not gonna look up the flow data someone showed.

Walbro isn't used because they're cheap, they're used because they WORK. It's not just for the Supra either, they're used all over the place for a good reason.

 

[figgie]

Not from what I've seen...

Trying to find anything on SF is worthless these days though, so I'm not gonna look up the flow data someone showed.

Walbro isn't used because they're cheap, they're used because they WORK. It's not just for the Supra either, they're used all over the place for a good reason.

and so is weldon and where they count. Ultra high horsepower and pressure based fueling. Hell even the Bosch 040 or inline 044 are leaps and bounds better than the walbro, yet very very few run them. The difference beside high psi performance. PRICE. Eitherway, you don't see people ponying up the cash for them. The only thing that keeps the walbro in the publics eye is the low price. Not the performance and sure as hell not the long term reliability.

 

[Justin727]

and so is weldon and where they count. Ultra high horsepower and pressure based fueling. Hell even the Bosch 040 or inline 044 are leaps and bounds better than the walbro, yet very very few run them. The difference beside high psi performance. PRICE. Eitherway, you don't see people ponying up the cash for them. The only thing that keeps the walbro in the publics eye is the low price. Not the performance and sure as hell not the long term reliability.

I couldnt have said it better myself!

Almost makes me happy I went with my A1000

 

[Poodles]

oh, don't get me wrong, any nutcase that thinks they're gonna do 1000HP on a walbro is out of his mind...

There are other factors besides price. They ARE reliable, but the proliferation of the chinese made fakes is hurting their name. They are also quiet compared to the Bosch pumps you listed. They also are drop in replacements.

Most of the pumps you listed are overkill on most setups, whcih in the end only ends up heating the fuel.

Anyone looking for big numbers isn't going to have much left of the stock fuel system besides maybe the tank, so the arguement is redundant.

 

[effet]

more rev => more power
Reving a 7M engine to 8500rpm gives you a mean piston speed as high as an F1 car! This is because the long stroke on the 7M.
The main bearings design on the M and JZ are alot different to. The M has a larger radius then JZ, this will increese the periphery velocity of the bearing suffice and this not suited for high revs.


This is just my opinion...
But I think if you have the time and knowledge to make your own parts you could make some real hp without having to put loads of money in your engine.
If you stay away from all this crap with HKS and Greddy stickers on them you will save alot of money! Some things they do are good but most of it is just crap... there are alot of parts with no name that better then HKS and Greddy.
Making power and having a bling bling engine is two different things Instead of buying goodridge bling bling hoses you can go to a local hydraulic shop and buy better, more reliable and cheaper hoses there. Industrial stuff is made to last and take real abuse

 

[Nick M]

cylinder head flow numbers are sick for 2jz

I guess that means a 97 Camry head is super sick, because it lays a beat down on the 2JZ.

"That just ruined your credibility, thought I'd let ya know."

Not quite. The 2JZ flows about 235 cfms on the intake ports. The 1JZ flows about 215 cfms. Both at .400 lift. Theres even a greater diparity on the exhaust ports. The 7M is right around 200 cfms on the intake side. And if I remember correctly the 7M exhaust ports flowed a couple CFM's better than the 1JZ.

This is all based off of Erin Carpenders findings from supraforums.

And yes, figgie is right. No matter what you have, horsepower=money.

I have seen those JZ numbers relatively consistent. Somebody posted 220 intake peak on the 2JZ once. There are a few factors including the bench test and the tester for the final number. But the Camry head tested flowed 240.

Others have already pointed out the money part.

When asked how fast can I go, Smokey Yunik said "How fast do you want to spend?"

And the displacement and bore size. It can't be said enough. You want to go faster and are broke, don't drive a Supra.

Also the LS1

You can't get much more bang for the buck than an LS1 powered 4th gen Camaro.

 

[Nick M]

http://www.supraforums.com/forum/showpost.php?p=4338552&postcount=109

I guess you shouldn't penalize an entire forum for idiocy, but this is just plain dumb. He doesn't know what a flow bench is testing, yet will comment on it it justify his decision.

 

[annoyingrob]

Ok so the 2J is a much more advanced engine.. will it run all day every day at 800hp ? for 100k miles ? as a DD that you beat to death everyday ? or is 800hp to much.. i know you cant drive a 1000-1500 hp car around as a DD and excpect to hop in and drive 1000miles on spur of moment and not worry your ass off...
whats the limet of a DD hp ... Opinuns ?

Here's my experience on the matter. I say experience, not hearsay.

I personally know two people with MKIVs running extremely high power levels. One has about 680whp, and track races the car fairly regularly, the other has mid 700s to the wheels, and drives the car fairly regularly when it's nice out.

Both of these cars have had zero issues in the last few years that I've known the owners. Both cars are running stock internals. The only modifications to both cars being a larger fuel system, larger turbo, larger cams, larger intercooler, and appropriate body mods for the power (larger tires, heavy clutch, one has a full roll cage too). Both are running a full standalone, with a LOT of hours into tuning (especially the track racer). This is where the key to reliable power lies, within someone who has the tools, and knowledge to properly tune the vehicle.

Edit: Actually, now that I think about it, the 700ish car broke a rear-end one time.

 

[wiseco7mgt]

so whats the record hp for a toyota motor with stock internals .i know of a
1fz in australia that was stock internally that almost made 1000hp.

 

[hottscennessey]

Not to side track, but isn't the 2jz-ge head better for a single setup, with the bigger exhaust ports?

The stock 2JZGE usually makes less power than the GTE with the same modifications. I believe the biggest restriction for the GE are the cams. Not many people run upgraded cams in the GE so it's a lot harder to do a side-by-side comparison.