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Discussion starter · #21 · (Edited)
agreed, looking at the technology put into these motors in 1989 is mind-blowing, especially compared to domestic "stick with what works" mentality. Not say domestic sucks, they've perfected a design(like the LS1) and are doing well. Just not as interesting. Thats a main reason I love nissan soo much. Ignoring the already amazing ability of the RB series take a look at the new monster family, the V series. Like the VQ35HR with its NDIS(Nissan Direct Ignition System) and CVTC with hydrualic intake cam and electromagnetic exhaust cam. Hell, then there is the VVEL(Variable Valve Event and Lift) on the VQ37VHR. Screw VTEC, Nissan is squeezing more and more performance out of these motors and in my opinion is setting the benchmark for design. And thats only talking about the valvetrains.

and this is going to stay N/A. If the rumors are true and it does put out 301HP and 330TQ, and add on a custom intake, port/polished heads, and full custom exhaust and it'll have a chunk more than stock without sacrificing reliability. We'll have the best of both worlds. Enough power in an S13 to scare the faint of heart and have fun, while having the reliability of a stock motor. Plus, we can do a one time tune on the ECU and call it a day. Keep in mind this is a daily driver haha. And I'll be the last person on this site to post some stupid comment like "we're shooting for 500-600whp". retarded.
 
#22 ·
yeah i hate those guys that make an rb26dett build thread saying they are looking to get 700-800whp. the one guy planned to spend like 6 years on it if anyone knows who im talking about. dave and i were at work tonight and decided that im make solid titanium suspension links..it should be interesting.
 
#26 ·
wanna see if tyler wants an rb gearbox instead?

Price: 1800USD-2000USD package include the following:
1) RB25DET gearbox
2) gearbox axle or shaft
3) adpartor plate
4) custom flywheel
5) standard clutch (rb25det used) - condition can be bad, depends on luck
6) new starter or a bracket for relocation of the original VH starter - using original starter at the original positions
7) gear level relocation link.


just the adapter plate is only $330
 
#33 · (Edited by Moderator)
hi i'm rednismoracer... im an idiot who cant read:thumbsup

wow, you should go with an LS1 when you already have a vh45 sitting in your garage. why wouldnt you want to spend thousands upon thousands on a small block chevy and be a fanboy like everyone else, really its the cool thing to do...


listen, I could care less about the LS1 swap. woooo! $4000+ just to get the motor and transmission alone. thats retarded considering we'll have much more power out of a Nissan 4.5L than a Chevy 5.7 while spending less than what it costs to purchase an SR20.

:happyfing btw the way, the VH has 330TQ...i'd rather have that than HP.
 
#36 ·
That engine looks like it's in pretty tough shape...

I've been doing a lot of reading over on Nico to come up with a game plan for my own swap into a s13. One of the things that I find really interesting is how chaotic everything on top of the engine seems to be (from an engineering point of view) compared to the engineering marvel that is the motor itself. It's basically a disaster - an opinion also shared by all the Q45 guys. What have you decided to do with the tangle of emission hoses, coolant lines, and misc problem prone sensors hidden under that ridiculously ugly intake manifold to make it less of a problem area?

Also, the injectors seem to fail with the same frequency that the rest of us change our oil... any thoughts on how to upgrade these components? Do you know if there is a way to replace them with another 370cc injector that is more robust?
 
#37 ·
umm. it wasnt that bad. i was the one to tear everything apart. yes the hoses were brittle and cracked but no biggy. its actually quite simple up top. it was only an hour to get it down to the block and heads and the valve covers off. once you get the spider looking plenum off everything is there. fuel rail was a breeze. all the bolts were really easy to get to. the manifolds were even cake to get off. and the hole coolant system up top is quick and painless. putting it back it will be a different story. there are black coolant hoses connecting the water pump housing to the coolant ports to the head. i had originally planned on taking aluminum piping and just welding it up that way and tossing the old black hoses. might not have a welder for that so. the overall design is simple, easy, and beefy. two words. tank nasty..
 
#38 ·
I hear you on that coolant system... However, I have seen someone run a separate pipe from each of the individual ports on the insides of the heads to the front of the engine so he could use an electric water pump. Without having an engine sitting in front of me, I can't say if that is an easier option, but it doesn't look too bad. It's weird that Nissan didn't just run internal coolant channels. Oh well.

What do you think about all that emission crap? Is there anyway that any of that can be eliminated? Also, it looks like there are several hoses going to the throttle body. Are those coolant lines like the ones on other engines and can they just be bypassed? Q45 folks talk about replacing those goofy little hoses with kits (containing the replacement hoses) that costs them $300-$400. That is insane!

Injectors. From what I've read, the 90-93 injectors' reliability suck - especially in this age of alcohol diluted gas. The 94-96 injectors are supposed to be better, but not great. At $300ish a pop, they should be made out of tungsten and diamond (or at least titanium;)). Any thoughts?
 
#39 ·
scorean said:
I hear you on that coolant system... However, I have seen someone run a separate pipe from each of the individual ports on the insides of the heads to the front of the engine so he could use an electric water pump. Without having an engine sitting in front of me, I can't say if that is an easier option, but it doesn't look too bad. It's weird that Nissan didn't just run internal coolant channels. Oh well.

What do you think about all that emission crap? Is there anyway that any of that can be eliminated? Also, it looks like there are several hoses going to the throttle body. Are those coolant lines like the ones on other engines and can they just be bypassed? Q45 folks talk about replacing those goofy little hoses with kits (containing the replacement hoses) that costs them $300-$400. That is insane!

Injectors. From what I've read, the 90-93 injectors' reliability suck - especially in this age of alcohol diluted gas. The 94-96 injectors are supposed to be better, but not great. At $300ish a pop, they should be made out of tungsten and diamond (or at least titanium;)). Any thoughts?
Click to expand...
the coolant system doesnt bother me. nor does the emissions junk. that will all be removed. i plan to fabricate a custom plenum hopefully out of aluminium but may have to settle for Stainless, either way its going to breathe. its going to be down to the bare minimum and will probably use megasquirt just for the fact that its cheaper in our case. we'd have to buy all the maf, wiring loom, computer, yadda yadda. injectors are side feed, not sure on the impedence. if they are junk, replacements wont be hard to find. im sure ka and sr injectors will work.
 
#40 ·
That's kind of what I was thinking for mine, especially considering the cost and problems associated with the stock MAF's. Of course, I was planning on buying an entire car and transplanting as much as I could (engine, brakes, LSD, sway bars(?), etc.). My goal was to see how cheap and easy it could be done while still maintaining a quality build. Anyway you shake it, it would be an awesome car considering that a stock Q45 goes 0-60 in 6.1 sec and weighs over 4000 lbs. Put that in a car that weighs 2500 and do the math. Now if I could just figure out how to swap that active suspension in with some tweaks to the algorithms and we'd have a rocket that can pull 1.5g's on the pad.

Unfortunately, I'm back to square one in that the car that I was supposed to pick up this last weekend got sold out from under me before I could arrange a trailer. I'm pretty bummed about it: $200 for a 94 with no title and some broken glass that was only 2 hours from me. Perfect deal. Now I've got my sights on another 94, but it's about 7 hours away... we'll see what happens.

By the way, let me know what you come up with for the intake, as I'll be doing a custom manifold myself. I'm going to try to do twin tubes running down the center with the runners down and out the bottom. The short tubes will sacrifice some low-end torque (or so I've heard), but I don't think that will be a problem for this car. I'll probably go with something polished, but have been investigating carbon fiber as well.
 
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