
Brandon


Alrighty, been posted numerous times and I have to admit that I was curious of it also. I am still under warranty but it kept eating away at me to get it done. MAYBE later on I will think about the BSR kit, but for right now, here ya go.
Plenty of pics so bare with it.
Tools I ended up using for this job. They are....
Hammer
10mm socket
12mm socket
3 flathead screwdrives of various lengths
6" 3/8 drive extension
3/8" drive ratchet
Large wire brush
Small wire brush
1 bottle of superfast drying OMG expensive ($20 for a can.. seriously) RTV for imports
14" bolt cutters
Scraper
14mm wrench
10mm wrench
This is what you start with. Luckily for me I had access to an automotive lift.
First comes first. Drain your oil. This is the 14mm wrench's only job.
Now to remove those oilpan bolts. 10mm socket. I have a wrench here to see what size it is. Always wear your proper protective equipment. I only where the gloves so I don't get oil all over the inside of my car when I leave.... almost a waste of time. You'll see why later.
All bolts removed.
Now the fun part. You got to pry the oil pan off. I had to bang a smaller flathead screwdriver through the RTV. I did it at the front and back of the pan. Be very careful not to damage the pan of the gasket surface on the block.
Here she is removed.
You have to remove this cover on the passenger side of the engine. It's a pain in the butt, especially when the motor is still warm. There are two 10mm bolts as well as two plastic tabs on the back part of it. Once the screws are removed, you're going to have to bang a small screwdriver between the cover and the B/S assembly, right above the front 10mm bolt. PITA. That took me about 10 minutes to figure out. I had to
actually take the bolt cutters to the front bolt because it wouldn't allow itself to come out fully. If you're going to put this on then you need a smaller bolt to replace it with. Also, you will have to remove the oil pickup tube. You will need to remove the 10mm bolt on the bottom of the B/S assembly and the 14mm bolt on the upper portion of the tube.
After that has been removed you have to remove the pulley that the B/S chain is on. To do that you need a 10mm wrench. What I did was jam a farely large screwdriver between the back part of the chain and the B/S assembly. Then I kept prying it towards the passenger side while I turned the 10mm bolt on the pulley. This allowed me to loosen the bolt because otherwise it will spin and spin the entire assembly.
This is what you're left with. Now for the fun part. Take them bolt cutters to it until it looks like.....
this. I tried to pry the peices aparts so I didn't cut it but it wouldn't work for me. Also, when cutting the chain be sure to not look at it. I had a few peices fly at me when it broke. To get the chain out of the motor I pulled like hell. It didn't work so I got the front part of the chain down as far as I could by hand. Then I had a friend bump the starter of the car. He bumped it twice and it fell out to what you see
there. This chain is actually pretty damn small.
Replace the oil pick up tube.
Be sure to clean up the gasket surface of the pan very well. Oil leaks happen because people rush.
Also make sure that the mounting surface is very clean. If it doesn't look like this, then you need to keep at it.
Ready for remounting.
Mounted and ready for oil.
Don't forget to change your oil filter.
Refill with oil when you're ready.
The large oil mess all over the floor.
The large oil mess all over me. I got this shit on my face and lips.
Spare parts.
And that's all folks. Any questions can be asked here or by PM'ing me. Good luck.
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Sin



i think this is sticky worthy. well written great pics. YAY for free mods!
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Bryan



Heck of a write-up. But if I may add some diagrams from the FSM for removal/installation of the lower oil pan for those "by the book" people out there. 







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Brandon


Wow, thanks man!
Only one thing to add to that is the particular RTV I used, according to the bottle (and my previous experiences with them) states "Apply to the equipment as necessary using a 1/4" bead. Once RTV is applied then place equipment back together within 5 minutes and torque all bolts to spec. Equipment is ready immediately."
This shit is no joke. I paid 20.00 for ONE FRICKIN TUBE of this stuff. It's called "The Right Stuff - For Imports" Nissan OEM approved..... yadda yadda yadda. The shit works fast and for the time it saved me I'll pay it again. Anyway, yea, there ya go.
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Allen




wow, nice.
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Why didnt you buy the Jim Wolf Technology Kit for 80 bucks. It includes baffles so the oil will actually flow a lot better to your crank. Also aren't you supposed to remove the balance shafts when you do that? Or do people generally just leave them in?
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Kevin

Nambito wrote:
Why didnt you buy the Jim Wolf Technology Kit for 80 bucks. It includes baffles so the oil will actually flow a lot better to your crank. Also aren't you supposed to remove the balance shafts when you do that? Or do people generally just leave them in?
Unless you have the JWT kit you need to leave them in. You will need 1.5 more quarts of oil, which will just bake at the bottom of the pan, and you'll starve the crank when you go around corners. The bsr kit makes the oil flow better so you can take corners better and lose the 20lb mass of the balance shafts.
You are supposed to remove the chain tensioner though.

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Kevin

also when I did it i never removed the pickup tube. And if you use normal RTV silicone (i.e. the standard stuff you find at the hardware store. I used the oil resistant/high temp black stuff) wait at least TWO hours before adding oil or driving around.
Viet waited one hour and his leaked. I waited two and a half and took a heat gun to it for 10 minutes before oil even went in my car.

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Angelo


thetuna wrote:
Nambito wrote:
Why didnt you buy the Jim Wolf Technology Kit for 80 bucks. It includes baffles so the oil will actually flow a lot better to your crank. Also aren't you supposed to remove the balance shafts when you do that? Or do people generally just leave them in?
Unless you have the JWT kit you need to leave them in. You will need 1.5 more quarts of oil, which will just bake at the bottom of the pan, and you'll starve the crank when you go around corners. The bsr kit makes the oil flow better so you can take corners better and lose the 20lb mass of the balance shafts.
You are supposed to remove the chain tensioner though.
so its better to have JWT kit? or its doesn't matter
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Jeremy


noticed any power gain ive been debating doing this
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Brandon


I personally don't think the JWT kit is worth a frickin dime. It's not really changing anything other than removing the dead weight. I can do that myself when I want.
Yes, definately a notice in power and in gas mileage. I'm getting (seriously) about 2 more mpg.
Also, vibrations for me with MMIs are pretty harsh (IMO) around 3200-3800. Definately livable and not noticable anywhere else. Under power you don't notice it.
I also routinely drive in that RPM in 6th gear so I notice it a lot. I'm very sensitive to changes in my car.
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Angelo


dude thanks for the info.. hopefully ill do this before the winter
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Jeremy


yeah im gonna do this very soon. why is it that always we must wear white t-shirts when working on our cars and they always get fucked up haha
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Allen




white t shirts are the most common expendable shirt owned. good write up.
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Brandon


Thanks for the props. White t-shirts. Comfortable. Come in a 6 pack. $5. And they go with anything. lol.
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Jeremy


yes i agree but its like u wont even plan to work on the spec and somehow u just happen to ruin a white shirt not necessarily a plain white t haha just thought that was funny. yeah good write up im gonna do this soon
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Beelzabub



White t-shirts a hot rod tradition since the begining of it all.

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Beelzabub



Oh yeah awesome write up, pics really help too. Does it shake and rumble real bad at idle now ?

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Jeremy


he told me mainly between 3200-3800k thats the only place u really notice it, and under full throttle u dont even notice it there
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Brandon


NizmoQR25 wrote:
he told me mainly between 3200-3800k thats the only place u really notice it, and under full throttle u dont even notice it there
QFT.
I don't notice a single change at idle. If anything I feel my idle is smoother. BTW, if you do not have MMIs then you may notice somethin. I have them and had them before this mod. I didn't notice a thing at idle. The only place I noticed anything was what he already said.
Thanks for lookin out for a brother.
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Beelzabub



Thanks for the answer man, that's the one thing that has kept me from doing it so far.

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LAWLZ it's only Viet!



Whats PN on that offset wrench that you have from Snap On?


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Brandon


evil_twin wrote:
Whats PN on that offset wrench that you have from Snap On?
What?
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LAWLZ it's only Viet!



Whats the Part Number on that wrench?


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Geoff

what bolt is that snapped in half? how did you get the other end out? and where did you get the rtv (the quick dry stuff)? if you answered any of those questions above, sorry. but i appreciate the help.

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Brandon


A part number.... eh... if you're talking about the one I used to get the sprocket bolt out, it was a 10mm wrench.... that's it.
I did answer the RTV question above. You can get it at pretty much any automotive store. It's gonna cost just under 20 bucks for ONE can though. It's a pressurized can so it comes out kinda like a can of cheese-whiz.
The one bolt that is snapped came out of the cover for the lower balance shaft sprocket. It was too long to come out on it's own so I used the bolt cutters to cut it in half. If you want to re-install that bolt, just buy another bolt just about 5mm shorter.
Last edited by Obsidian (2007-10-22 13:14:22)
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Anthony


Me and Jeremy did ours and it wasn't very hard at all. When it comes to shit inside the engine I'm paranoid as fuck lol but it wasn't that bad.
Honestly, the only vibrations I feel is a little more at idle and braking. I did 80-85 the whole way home and didn't feel any vibrations.
We looked at a few stores for that RTV but couldn't find it. We then went to the dealer and got the RTV they had which is red. It's working so far.

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Jeremy


Bs Chain Cut Ftmfw!!!
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Ben


where to buy jwt kit?

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Geoff

i'm just really scared for staving the engine for oil when cornering which is why i got the kit

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Allen




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Jeremy


i believe the point on the kit is it removes the shafts which gives u the extra quart or so more oil capacity cuz if u ran the some amount WITH the kit it will starve the crank, with just our chains cut we freed up the power and left the shafts there with no need for the extra oil and no worries of starving the crank FTW!
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Joe


I am still debating whether I should do this or get the JWT Kit.

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Geoff

just cut the chain.... honestly i had the kit and just cut the chain because it was soooo difficult to do.

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Joe


Well if I get the kit I'm gonna go up to Viet's shop to get it done.

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Jen


i think this is going to be my next mod...i've heard the jwt kit is worthless for the most part..so i'm gonna go with cutting the chain. thanks for such a great write up..this is going to help a ton when i go to do it...
i won't wear a white shirt though. 

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D Money


QR25DECHIC wrote:
i think this is going to be my next mod...i've heard the jwt kit is worthless for the most part..so i'm gonna go with cutting the chain. thanks for such a great write up..this is going to help a ton when i go to do it...
i won't wear a white shirt though.
who the hell told you the kit is worthless?? thats bull, the kit gives you weight reduction and more oil capacity, cutting the chain is for lazy people, or people like me who can't get the god damn balance shaft assembly out

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Allen




theres a long ass thread about the benefits of the jwt bsr. it came down pretty much that the kit was the over the top absolute best solution for the mod. but the best bang for the buck is obviously just cutting the chain.
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Brandon


Tweek wrote:
QR25DECHIC wrote:
i think this is going to be my next mod...i've heard the jwt kit is worthless for the most part..so i'm gonna go with cutting the chain. thanks for such a great write up..this is going to help a ton when i go to do it...
i won't wear a white shirt though.who the hell told you the kit is worthless?? thats bull, the kit gives you weight reduction and more oil capacity, cutting the chain is for lazy people, or people like me who can't get the god damn balance shaft assembly out
I said it many time in this thread. I've said it many times as to why I dislike the kit, but I will say it again.
Adds oil
Yea well, people with the kit are having the same problems as people without the kit. The starvation around the side of the crank. Maybe you're thinking the engine can splash more oil to better lubricate. From what I saw, the connecting rods don't even go down that far, so splashing will be pretty non-existant. So the added oil is just added weight.
Less weight
Take out the 30 empty bottles of mountain dew and you saved the same amount of weight. Plus with the kit still inside it displaces the oil in the engine to make sure it is able to move around. With the kit you're adding oil to get it back to the same level as with the b/s still in there.
And it's 100 bucks for that thing. I'd like to have it, sure, but I can keep the 100, get the same benefits, and not be all pissed off about how incredibly hard it is to remove the b/s.
So, in my eyes, working on engines for over 6 years, this kit is worthless.
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I don't understand why this chain needs to be removed though? What is its purpose?
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Geoff

cpuslave wrote:
I don't understand why this chain needs to be removed though? What is its purpose?
hehehe newb question.
but the chain is run by the crank and consequently causes parasitic loss. by cutting the chain you free up about 8hp. additionally it can be thought to be a safety mod for the engine. the bs spins at 2x the speed of the engine and the possibility of failure is high. by cutting the chain (and consequently removing it) you free up power and improve reliability.

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Brandon


^ correct. Also, the balance shaft assembly has a max RPM of about 12,000. A redlining engine exceeds this by at least 500 RPM. So, there ya go. Remove that for saftey of the engine and also to free up the horsepower.
As far as what the assembly does, it makes the car idle smoother and removes vibrations that the little 4 cylinder stroker motor puts out.
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Don



Do whatever option makes you happy. Cutting the chain gives you the same power gains as doing the JWT kit. Cutting the chain is most obviously easier, but the JWT kit's difficulty is highly exaggerated. The hardest part is removing the upper tensioner bolt. After that, it's a piece of cake. I did the full kit on my car without any problems/ill effects. I'm trying to remove all the weight I can out of my car so losing the 15-20 lbs of the balancer assembly was preferable to me. Having extra oil can never hurt on the track either.
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Bill


I will be having to do one of these soon. I am curious to if the chain has a master-link that can be taken apart, instead of cutting it. Just in case the person decides that they want it reinstalled sometime later. Thanks
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Interesting. Yeah I know it's a 'newb' question or whatever, but hey I'm just trying to learn. I have an 01 GXE(QG18DE, 1.8), any idea if this chain is on my engine?
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Don



cpuslave wrote:
Interesting. Yeah I know it's a 'newb' question or whatever, but hey I'm just trying to learn. I have an 01 GXE(QG18DE, 1.8), any idea if this chain is on my engine?
No this is the balance shafts in the QR25 engine.
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Jake


the chain does not have a master link its designed to be put on with th front cover off and goes on like doing a timing chain
also just wondering if there is enough room in there to get a cutoff wheel in to cut the chain instead of boltcutters
Last edited by 06chill (2008-01-29 00:03:36)

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Kevin



