EASY bolt-on MOD to the M (mainly Y34)

Post by **elwesso** » Tue Nov 15, 2005 10:23 am

Was doing some research on the Ms last night and this pertains mostly to the M45 guys....

This mod is an EASY way to make your M a SCREAMER!!

Basically what im suggesting is swap in a different differntial into your M... This will increase accelration without much fuss...

I originally intended this to be for the Y50 guys but this seems to make more sense for the Y34 guys.....

The Y34 comes with a 3.133:1 final drive... The good thing is the Y34 M comes with the same 6 bolt differential as the G50 Q45 and even better the V35 G35.... which both have a final drive of 3.54

So basically all one would have to do is take the pumpkin out of a G35 (manual tranny) or a G50 Q (theyre the same except the G50 Q has 2 mounting points intsead of the Ms and Gs one point)... anything with the 3.54 ratio....

This would put Y34 M owners faster than a M owner.....

Post by **szh** » Tue Nov 15, 2005 11:08 am

Hmmm ... very interesting! I will have to look into this a bit.

Z

Post by **elwesso** » Tue Nov 15, 2005 12:40 pm

theres nothing to look into except put it on the car.....

Post by **97Q45t** » Thu Nov 24, 2005 6:56 pm

I'm trying to persuave a friend to get an Y34 or an F50. If he gets one of those, I'll personnally find out if the 3.538 ratio R200V (LSD) fits into the Y34 or F50. From the pictures in the FSMs, the only difference is the companion flange.

Since the Y34 and F50 only come with the R200 (2-pinion) final drive, they would also benefit from converting to an R200V.

V35 M/T: 3.538 on the R200V only.Z33 M/T: 3.538 available on both R200 and R200V.

Now, the hard part is how to find a used 3.538 if we don't want to spend $1200 on a new one.

Post by **97Q45t** » Thu Nov 24, 2005 7:01 pm

One more discovery:

The rear R200 (3.692) on the FX looks identical to the one on the Y34 or F50, including the companion flange.
Modified by 97Q45t at 7:14 PM 11/25/2005

Post by **elwesso** » Fri Nov 25, 2005 6:43 pm

if by companion flange you simply mean where the driveshaft bolts to the diff, then why not just swap them out....

The main problem is they dont make a 3.69 in the 6 bolt.... The G50 diff has the 6 bolt flanges, not the 5 like the Y33 and N/A 300ZX. You can get Q diffs for like $300....

Post by **97Q45t** » Fri Nov 25, 2005 7:47 pm

elwesso wrote:if by companion flange you simply mean where the driveshaft bolts to the diff, then why not just swap them out....

Exactly, that's why I said the "only" difference was the companion flange. The companion flange is number (2) in the pictures below:

2003 FX35/45:

2004 G35:

The picture of the R200 from the '02-up Q45 look exactly like the on the FX. So if I buy an R200 or 200V from a 350Z or G35 I only need to change the companion flange. If I buy a R200(V) from an FX, I probably don't need to change anything at all.

According to the FSMs, FX35 AWD and FX45 have 3.692 gear ratio diff, and it has 6-bolts driveshaft outputs:

Since the Y34 and the F50 use R200(V), the R200(V) from FM-flatform has more chance fitting in the Y34 and the F50 than the G50's R230V has.

The R200(V) is also available in 3.357.
Modified by 97Q45t at 2:37 PM 11/26/2005

Post by **elwesso** » Sat Nov 26, 2005 9:53 am

Ok so I was arguing even though we were talking about tehs ame thign....

at any rate, when i was under a G35 it looked just like the Q differential! I think itd be worth trying it, because you can always resell easy.

Post by **alexf20c** » Sun Nov 27, 2005 7:02 am

OK, so I'm trading in my '05 Grand Prix GXP for an '04 M45 today, and was doing some research. I came upon this thread and Jesus Christ, what's with all the acronyms?!?

Is the '04 M45 a Y34 chassis?

Are you guys saying I can swap the rearend off of a G35/Q45/FX?

Post by **alexf20c** » Sun Nov 27, 2005 7:05 am

Also, I read somewhere that you can use the Brembo Big Brake kit off a '03/04 Q45 on the '03/04 M45. Is this true?

I had the GXP up to 420whp, but it ate up the 4T65E (snapped the shaft on the ring gear), not to mention the water pump and motor mounts. I've always liked the butch Lincoln-looking styling of the M45, and the complete lack of an aftermarket is part of the appeal; I'd be limited to K&N, exhaust, and maybe some headwork.

What are my other options as far as lowering the car, power mods, etc?

Post by **elwesso** » Sun Nov 27, 2005 2:46 pm

Hey Alex, welcome to NICO!!!!!!!!

Congrats on geting an M....... We have an 04 GTP and i can say that theres no comparison for the M..... youll LOVE it

Your correct the Y34 is the M45 03-04...

the suggested mod is something that us Q guys, as well as 240 people have been doing for a LONG time.... The car will tend to be geared toward smoother takeoffs (taller gearing) and better fuel mileage....... The different rear will realy let the thing turn faster..... youll love it.

As far as aftermarket, eibach makes a set of lowering springs im pretty sure......

You can bolt on the brembos, but trust me..... Theyre worthless for the money, the Z32 calipers are just as strong and you can get them at like 1/5 price (no joke!)

Post by **szh** » Sun Nov 27, 2005 5:55 pm

alexf20c wrote:Is the '04 M45 a Y34 chassis?

Welcome to NICO!

Yes, as Wes also said, the 2004 M45 is a Y34 chassis (same as my 2003). The 2006+ is a Y50 chassis - regardless of whether it is an M35 or an M45.

Z

Post by **alexf20c** » Sun Nov 27, 2005 9:21 pm

Thanks!

I picked up the car earlier today and have found nothing to complain about yet. Already raced a 330Ci which I soundly beat, but not by as much as I was expecting... Time for the power mods!

Specifically, will a FX/Q/G rearend work on my Y34 M45? Is the 3.69 (FX45) the shortest OE gearset out there?

As for the brakes, I opted for the Brembos because I didn't think there was anything else aftermarket. What do I need to change (if anything) if I want to use Z32 calipers/rotors? I'm all about the parts swapping - my Bonneville had Camaro SS wheels, Z06 front calipers, and Z28 rear calipers on a Monte Carlo spindle with Cadillac axles. It was the only way to use junkyard parts to get the Vette calipers to work!

Back to power mods. I'll probably get a K&N filter and make some sort of CAI, and I'll have my guy make me some stainless headers/exhaust, but what can be done to the VK as far as internals? Aftermarket cams?

I can have some headwork done to free up a few more ponies, but what's available in the aftermarket (ECU reflash or chip, etc.) for this motor?

Sorry for all the questions!

Post by **alexf20c** » Mon Nov 28, 2005 6:22 am

Can I Vortech the VK?

Post by **elwesso** » Mon Nov 28, 2005 6:42 am

You obviously have the domestic sort of mindset..... There really isnt anything internally for the VK since its still new......

You could use the 300ZX twin turbo rear end... That is 6 bolt (which is what you want) and is 3.69... Itd be quite a bit cheaper... thatd be the cheaper than the FX/G one......

The 300ZX stuff is bolt on as far as I know.... youd just want the rotors and calipers as far as I know.. Let me do some more research, but that should be all youneed......

Id rather you not use a K/N because they obviosly do not filter as good and the stock airbox should be adequate. Whatever you want to do, but the VK doesnt need any help in consumption of oil.....

Impul makes a stroker kit for the VK, there arent any cams and things like that... mainly because the cams are gonna be about as good as they can get...

No ECU reflashes... OBDII makes that stuff hard.

Post by **szh** » Mon Nov 28, 2005 9:06 am

alexf20c wrote:I'll probably get a K&N filter and make some sort of CAI

I'd avoid the K&N air filter ... most (but admittedly not all) people on this forum who have tried them, have gone back to stock air (non-oil) filters. Reasons range from not providing any real gain to the most common problem: the oil gets into the air-stream and fouls up the MAF over time.

alexf20c wrote:Sorry for all the questions!

No need to be sorry! This is what this forum is all about!

Z

Post by **alexf20c** » Mon Nov 28, 2005 9:45 am

Ya, I always like to increase power through efficiency, rather than by force feeding. Velocity vs. volume.

I researched the Impul Hoshino stroker kit, but the only pages I found in English weren't of much help. Is there a US distributor?

My dad actually had two Z32s so I'm gonna steal parts off of them. He had AP Racing brakes on one of them, so I might as well use them. Free is good. The rearend is also upgraded... It's good to know that a lot of the parts are interchangeable.

I'll stay away from the K&N as per y'all's's (is that a word?) advice. I still want to open up the motor and throw in some rods/pistons, and balance the crank. The stock crank is forged, correct?

I really, really want to Vortech this M45. I want the power, and it seems this is the only realistic solution.

Again, thanks for the help!

Post by **alexf20c** » Tue Nov 29, 2005 4:02 pm

Well the Vortech is out of the question, but I got ahold of Impul USA so I might go with the 5.1 stroker kit.

I got the 300ZX rearend installed (hardened gearset with Cusco 1.5 LSD), and also the 300ZX brakes (14in front with 6-piston AP Racing, 12.5in rear with 4-piston AP). Everything went together without a hitch. I had some clearance issues with the rear wheels, but the 4.5lb sledge fixed that real quick.

Post by **szh** » Tue Nov 29, 2005 4:13 pm

alexf20c wrote:Well the Vortech is out of the question, but I got ahold of Impul USA so I might go with the 5.1 stroker kit.

I got the 300ZX rearend installed (hardened gearset with Cusco 1.5 LSD), and also the 300ZX brakes (14in front with 6-piston AP Racing, 12.5in rear with 4-piston AP). Everything went together without a hitch. I had some clearance issues with the rear wheels, but the 4.5lb sledge fixed that real quick.

Cool!

I'd love to see some pictures and, if you get some time, some of your detailed impressions about how it handles/brakes/drives!

Z

Post by **elwesso** » Tue Nov 29, 2005 5:25 pm

Alex you should look into the keuylian SC... Some old school pics on a Q45.. twin screw type if memory serves.

please make a seperate thread on how this stuff works!

Post by **SR20 Infiniti** » Wed Dec 14, 2005 11:12 am

i dint wanna start a new thread but since everyone is talkin about more power outta the Y34 i have a couple questions ?

can more HP be achieved with a 3 - 4 inch custom intake (is CAI possible ?) and a non-oil cone filter ? or should it really be left stock

with a exhaust upgrade from say after headers, with x pipe twin mandrel bent all the way back into a Junction Produce muffler; is there power to be found ? are there header available ?

Impul kit sounds good, maybe a AFC too ?

can the 4.5 come close to 400HP NA (flywheel) with custom bolt ons ?
Modified by SR20 Infiniti at 4:40 PM 12/14/2005

Post by **elwesso** » Wed Dec 14, 2005 12:22 pm

custom bolt ons is a oxy moron IMO.....

I think the first step woiuld be somehow adapting the 90mm Q45 TB...

Post by **SR20 Infiniti** » Wed Dec 14, 2005 1:08 pm

how big the the y34 TB ?

Post by **elwesso** » Wed Dec 14, 2005 5:48 pm

wasnt able to find it in the FSM, but from what I recall looking at a VK45 they looked smaller..... maybe like 60mm instead of 90mm??

Post by **maxnix** » Mon Dec 19, 2005 4:00 am

elwesso wrote:No ECU reflashes... OBDII makes that stuff hard.

There is an Impul ECU, but who knows how it would work with our crap gas?

Skip the K&N unless you want to decrease performance and longevity.

Impul stroker kit increases low end torque at expense of upper end revs.
Modified by maxnix at 7:42 AM 1/30/2006

Post by **elwesso** » Mon Dec 19, 2005 4:46 am

Hmm... I doubt the impul ECU would work without detonation... maybe? How much do they cost.....? I guess worst case scenario you could back the timing off just a degree or 2

Post by **kev1n** » Sun Jan 29, 2006 5:13 pm

I am quite intrigued by this. My F50 is dying for mods,

If there is a rar differential that I should be looking for which car should it come out of ? I am not sure about what the ratios and numbers mean as I am not mechanically savy but if you guys have any suggestions as to what model/year of a differential I can use for my F50, I'll reach out so some of my friends in the auto industry to see if they got any hookups. A lot of them by salvage cars for rebuild and parts so I figure they might have some good sources. Maybe someone could explain what all the numbers mean for the ratios etc ?

Post by **elwesso** » Sun Jan 29, 2006 6:00 pm

The F50 diff is the same as the Y34 so you can use the Q45 differential (from the G50 only) and the 300Z twin turbo one.

Post by **kev1n** » Mon Jan 30, 2006 6:35 pm

elwesso wrote:The F50 diff is the same as the Y34 so you can use the Q45 differential (from the G50 only) and the 300Z twin turbo one.

Thanks,

Other then cost, is there any reason why I should not consider a g35 M/T one or a FX one? I'd prefer one that has less mileage overall. Thoughts?

Post by **elwesso** » Tue Jan 31, 2006 7:56 am

kev1n wrote:Thanks,

Other then cost, is there any reason why I should not consider a g35 M/T one or a FX one? I'd prefer one that has less mileage overall. Thoughts?

No theres no reason, its just easier to find Z32tt diffs..... Trust me, when differentials on these things routinely last 200k with good fluid changes, it doesnt matter... if you find one with 100k or so on it, its still got PLENTY of life left in it.....

EASY bolt-on MOD to the M (mainly Y34)

EASY bolt-on MOD to the M (mainly Y34)

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