#1 Hello to everyone(long time reader ,first time posting a thread)

#2 I`m posting this thread because I have personally work on th rb26dett engine.

#3 In g35driver site they have the same discussion thread (If more info of what I have done with the rb26dett check my post there.

#4 Like Extra Z posted!!!!!!! TO "DOUBLE" THE POWER OUTPUT OF A V8 ,THE ENGINE WILL BE ALMOST COMPLETLY REDONE TO BE FAIRLY RELIABLE.
IN THE OTHER HAND A RB26 WILL DOUBLE THE POWER OUTPUT WITH STOCK INTERNALS EASY!!! AND CAN BE EVEN TRIPLE HIS POWER OUTPUT WITH LITTLE WORK( CAMS ,LITTLE HEAD WORK)STOCK BLOCK GOOD FOR 700WHP + WITH A GOOD TUNE!!! CHECK DSPORT MAGAZINE FOR A R33 GTR PROJECT ALMOST 600WHP WITH 91 OCTANE CRAP OF FUEL AND THEY ALMOST CRACK THE 800WHP WITH C116 FUEL FROM A 2.6 STOCK BLOCK ENGINE!!!TRY THAT WITHA 302 (5.0)MUSTANG ENGINE

#4 LIKE I HAVE SAID A LOT OF TIMES RB26DETT IS JUST A RACE DETUNED ENGINE PERIOD!!!!!!!! ANYONE THAT HAS PUT A COMPLETLY STOCK RB26DETT ENGINE ON A DYNO WILL CONFIRM THAT THE STOCK 279 (FLYWHEEL) ARE SO UNDERATED!!! RB26DETT AND 2JZGTE ARE OVER BUILD FOR THE STOCK POWER THEY PRODUCE!!!

 

Do you happen to have any examples of the RB's you have worked on! Like some pix, and dynos' or a video or two. Show us something cool!

 

I still have some pictures of what I have done Rb26,rb25 and sr20det engines all of them swap pictures in to early Z(1985 to 1988zx)I LOVE THOSE CARS!

I dont know how to post pictures here!!!!!!!! but If you want I can email you the pictures of some cool 300zx!!!!! remember this pictures are between 2 to 6 years old!!!! I sold both of my z just to buy my G (cars are so expensive here)HEY JUST LET ME KNOW!!!!!!!!!!! as for dyno`s throw out to the garbage the lower hp numbres!!!and when sold the cars give both guys the high hp numbers so they know what they were buying!!! I still have contact with the guy that bought the rb26 z (is a friend of mine)so I still drive that car from time to time (still running so strong that sometimes I got mad for selling that car)

 

well alright, sounds like you've had a pretty cool collection of cars. Photobucket.com is really easy to use, and an easy way to share pix. Or just e-mail it to me at bacalhau1669@hotmail.com I can post it up for you if you want!

 

I call BS. Why would you rebuild your motor just to sell it? Post pics of your RB motor.

 

He did on page 2 ... Pwn3d

 

 

https://my350z.com/forum/showthread....ad+gasket+blew
Thats why i am rebuilding the vq engine.

 

check your email !!!!!!!!!!! I send you few pictures
let me know!!!!!!!

 

bj's for you if you get that motor under that aluminum z33 hood!!!!!!!

 

Wow.

Look, I'm not trying to provoke an argument or flame anyone, but, at exactly what point in any of my previous posts did I mention anything about cost???

If you want to go that route, what is the highest HP NA VQ out right now? 600, 700 hp? No? Why not? Oh, That's right, not enough displacement. To make that much HP in a V8, it does not take that much money - $1500-$2500 for a forged bottom end, another $2k for some decent heads, $500-$1500 for a great valvetrain, $300-$400 for a cam, appropriate bolt ons and tuning, and there you go. Depending on the vehicle, you may have to get a beefier tranny, maybe rearend too, but in the end, you won't invest much, if any, more in this engine as opposed to a V6. There are plenty of Vettes and Camaros running 400+ hp on a stock bottom end without problems (I ran 350-400 hp on my '85 L98 Vette with stock crank & rods for over 3 years).

I am talking about total power potential with a given displacement, whether it's 1.5L or 6.2L. Sheesh....

Don't turn this into a "but the VQ/RB engine is more blah blah blah" argument. I orginally wanted to be optimistic about the power potential of the VQ over the RB because of the relatively large displacement advantage the VQ has. But, in typical "Imports are better than domestics" fashion, some of you had to pull the old "ricer" arguments out of your hats. I have yeat to hear the old worn-out, "but the XX engine has more power per liter, so it's better" excuse.

 

So I guess you dont get out much, because if he did this, he wouldnt be the first ya know. Or the second or third or fourth for that matter!

I wish ya well, I didnt hear a lot of people complaining when Tanabe put an SR20 in a Z and made 400+whp. I think its cool. Whatever floats your boat, and gets it going faster is what i say!

 

I fully understand your point and I respect that.I have work with rb26dett engine and I know what is capable off. My personal opinion is : if more than 550whp is what he want go with the rb26dett(is hevier than the VQ35 but will allow more hp reliable).

Now if less than 550whp just build a VQ35de block and go twins or single turbo(pleny of kits outhere will get that hp).IMOP for more than 550whp in a VQ35 boost has to go high and thats when "most" of the head lift comes. In the other hand the rb26dett is just a proven engine high hp engine that rev like no other and will take the most brutal beating without any complaints with pleny room to grow

When the time comes for me to go turbo( to much warranty in my car yet) I rather built a VQ35 block and go for 550whp. More than that right now is enough for me( The high price of gas not to much competition out there, unless I go to the track).But hey who knows that RB26DETT with a single turbo kit in my G still showing from time to time in my head!!!!!

 

It is funny because this motor swap is a huge agrument about turbocharged engines basically yet no one seems to mention that there are plenty of people that had no headlift above the supposed 550whp line. Even a member in the 700+whp range on stock sleeves with no headlift. Bigbri drives his car hard and beats it at 20+psi daily (and no he does not have a street/track setting, he drives full boost all the time) and revs the VQ to 8000rpms. Granted he has a new valve train and bottom end, it is possible.

Headlift is a big issue with air pockets it would seem in the heads. Most high HP people are using breather tanks to help avoid this problem in the VQ.

 

I have heard of this head lift issue, but I haven't done much research on it since I don't have any plans of going anywhere near that threshold. I see now why you like the RB over the VQ for high HP apps, though. Thank you for pointing this out to me.

What sort of rememdies have been explored to help counteract headlift? I would assume larger than stock head studs would help a bit. Any idea why it's a bigger issue in the VQ as opposed to other engines?

 

I`m sure that this head lift issue will be soon in the past .Like you said bigger and stronger head studs plus like "Quamen" post it some are using breather tanks to keep air pockests out.

Now why head lift issues on the Vq35 as opposed to other engines?????
Dont know for sure ,maybe is a combination of compresion ,boost and head studs. I remember a few years back, VG30dett engines wich are pretty bulletproof (600whp are possible on stock blocks) were having head gasket blow out failure , all of then in really high HP. What was the remedy for this!!!!!!!! arp head studs Plus better tunning(think problem was IGNITION timming more than the hight boost or weak head studs).

Do you remenber who is Jorge Lazcano????? Well he was the the first in the Z world to run 11,10,9 and even low 8`a (8.00 @? mph) on a stock body(just a ford 9" rear end) 1985 300zx (vg30et engine).Then he build a drag chassis car (1993 ZX with a vg30dett ) that was running in low 7 (best time before crash 7.01@198mph)His engines still blow some headgasket from time to time(1400 whp)Thats why I think has to do more about tunning!!! Or just is the head design who knows time will tell!!!!!!!

 

My point is that you can have an amazing VQ engine that is reliable and a beast.

I am not saying that there is no point for the RB swap. I just do not feel that reliability is a good determining factor from my standpoint. Unless you are going from the standpoint of reliabilty based on not doing things right. I understand that on an RB you can just turn the boost up (assuming tuned) and not have to worry about better gaskets and head studs so in that case you may have to do some more work to the VQ. But based on a cost standpoint, the cost of doing some of the simple things like new gaskets, studs, breather tank, coolant bypass, etc. are very minimal in my opinion and will give you a rock solid 600whp relibaly if you have the interenals and EMU to take care of the rest of getting there.

 

I'd rather have a 600whp RB26 than a 600 VQ any fcking day of the year!!

 

You are absolutly correct, but you have to understand that when going over 600whp almost all VQ engine builders recomend to go with a sleeve engine and that cost big money plus cams,ported heads,etc... WE are talking of a full build up engine,on the other hand the Rb26dett will get you there ,with a power band from 3500 rpm to 8500 rpm stock.

I know a fully build VQ35 with head work will rev to 8000rpm, but a build RB26dett head will rev easly to 10,000 RPM with HKS stage 2 head package that include cams,springs, retainers,valve guides,etc.(check TAKAKAIRA.com for price),not sure but I think is around $1,800.is cheap compare to only VQ35 cams!!!!!.

I know some rather spend the money and have a fully build VQ35 engine instead of a RB26dett swap (I mean for the amount of money they need to pay)but at the end is just another Z or G with 600whp and a build engine, the other guy with 600whp and a RB26dett engine.With both cars side by side ,On which car Do you think most of the people will be like this

Some do it for fun , other for show, and others because they dont know what to do with their money!!!!.I think 550whp VQ35 is enough for me (SH&T I THINK I`M GETTING OLD ) Next year when my G warranty expire,I will let you know which route I will choose.

DAMMM THAT FREAKING IDEA OF A RB26DETT IN MY G IS DRIVING CRAZYYYYY

 

The pix of the older 300zx's you sent me were very cool. Im gonna post them up on here for ya right now. Thanks a bunch!