Jump to content
SAU Community

Recommended Posts

probably a factor....but maybe not the only one in rb blocks.

since they are cast, have a full girdle and the crank is factory forged and nitrided...they are pretty strong compared to many motors despite being a long 6 cylinder. this is supported by the fact they almost never spin main bearings.....

image2.jpg

this is what breaks the oil pump.

a good read on whats happening :crankshaft harmonics

That's what said a while ago... It's going on without a doubt.

They are a I4. Not a longer I6.

Taking a wild stab here but a I4 is not going to have the crank movement a I6 has, especially due to weight and so on.

Nor are the forces/pressures there especially if hitting limiters and so on with all that extra spinning around.

And it was met with...

Torsional vibration and harmonics are generaly worse in an I4 due to firing order and cyl sequence, also one of the reasons most I4's have ballance shafts to try help NVH

Large crank movement = toasted bearings, SR20's run main bearings pretty easy if not 100% dead on ballance when running over 400wkw yet dont break oil pumps running a near identical drive setup & dimensions to the RB... Rb on the other hand comes out with bearings looking like brand new yet oil pump is scrap metal, The RB pump is driven not even 3-4mm from No:1 main bearing, pump gets damaged from movement but bearing isnt touched?

There is no way to have rotational vibration / whip without it running out of center.

Yes Rezlo an inline 6 is dynamically balanced, so no issue there.

:D

Time to revisit?

That correlates with the "a good harmonic balancer will save your oil pump" theory i've heard stated on here.

every time theres an oil pump thread i cut and paste this page from ati.. sums it all up. stock balancers wont be suficiant to keep a "stock" oil pump alive, not evan a trust or jun either.

on another note, our race supra (2jz) has a alloy crank pully with zero dampening, looks like a water pump pully.. its not blown the oil pump either. and it hits the limmiter pretty hard. just goes to show how superier the toyota oil pump drive system is..

ive tried to make them put a good balancer on, but with no sucess lol.

Group buy was removed @ the request of the creator.

"Well considering theres a few guys not real confident and wanting to see some testing results, this group buy can be closed for the mean time."

Fair enough too IMO. A G/B that should have started once there was some actual testing for sanity's sake at least. ;)

Whats happeneing with the gears? can't seem to find the group buy- probably blind i'll have another look.

Yes they are still being made. I closed the GB thread to follow the forum rules ;). I'll put up another one when i have some 'testing results'

Anyone have any pics of the inside of the NITTO Pumps ? - I would really like to see what makes it special, other than what is said about it.

I am a little interested now and like many others, I was simply scared into facing the fact that I would have to eventually buy a Tomei Pump for my ongoing build, but if there is an alternative, I am open to reveiwing it.

Thanks,

Allan

Anyone have any pics of the inside of the NITTO Pumps ? - I would really like to see what makes it special, other than what is said about it.

I am a little interested now and like many others, I was simply scared into facing the fact that I would have to eventually buy a Tomei Pump for my ongoing build, but if there is an alternative, I am open to reveiwing it.

Thanks,

Allan

i can send you a photo of the nitto pump that ate cast iron if you like...your e-mail address?

[email protected]

Thanks.

Although THIS does interest me, I am still waiting patiently for the AUS 'Tomei' replacement :)

So to whoever is doing it.....Get on that CNC and make some magic.....lol

Edited by JD74
[email protected]

Thanks.

Although THIS does interest me, I am still waiting patiently for the AUS 'Tomei' replacement :)

So to whoever is doing it.....Get on that CNC and make some magic.....lol

JPC in Melbourne already produce N1 style replacement OEM pump gears if that is what interests you. http://www.jpc.com.au/ The Nitto pump gears are made from superior material from those though...i would rather not risk it with any material other than Nitto or an external pump.

Edited by DiRTgarage

I was on Nissansilvia forums earlier and came across the powertune gears (again)

http://hardtuned.net/forums/index.php?app=...ttach_id=177301

made out of P20

hows it compare to JPCs 4340 gears? pretty cheap at $350

I am still at a bit of a loss when it comes to these 'Nitto' pumps.....

Where are they made ?

Who makes them ?

Who is Nitto ?

Info is in short supply. Website ? Manufacturer Info ?

Unfortunately these are not a great deal compared to Tomei anywhere else other than Aus/NZ......

Edited by JD74

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • You know what, I am enjoying your updates, but I have to say it is pretty poor form to walk into a shop that is paying for space and stock on the floor, try all their seats to work out what you are happy with, then buy somewhere else. If everyone did that the shop will be out of business with no opportunity for anyone to try a seat before buying. 👎  
    • Good work, and thanks for posting up your solution for future people!
    • Yeah mate that’s the plan, I just want something I can have fun in and work on during weekends.  There’s really only 1 road fit to drive the car on and luckily is been redone recently.  I do want to tune it next year sometime, no dynos here so I’m looking at an ECU that can be remote tuned. 
    • Initially I thought having a pair of Recaro seats would be a big bonus, it turns out these do get a little uncomfortable on long journeys (my fault, not the seat). I had a look through the GSM Performance website at reclining seats and booked an appointment to visit their show room. I got the Recaro Sportster CS for the R34 from here, was very happy with the service received so of course a re-visit was in order. Unfortunately the two Corbeau seats I had chosen aren't on display but they had 4 other options available. Two seats dug into my back, one dug into my legs and the other was perfect. I also found out that Recaro seats use a larger bolt pattern so some adaption was required. Luckily GSM offer some universal adaptors that should solve this problem. I searched the interwebs for price comparisons and Corbeau themselves were the cheapest at £300 cheaper (for the pair). I asked GSM if they could price match, unfortunately they couldn't. I later received an email saying Corbeau would honour them the same discount, but the purchase was already made. I did however order the brackets from GSM, both arrived on the same day. I started with the passenger side seat, knowing this was going to be a little trial and error. There are 3 mounting holes at the front and 2 at the rear on these JURAN Racing seat rails.  With the adaptor brackets mounted, the allen cap bolts started to push into the seat, NOT GOOD!  The rear mounting holes lined up but there were issues at the front. The holes were 1/2 hole out, so the brackets got a tickle with the drill to modify the holes. The supplied bolts weren't going to be long enough and a spacer was needed to stop the adaptor bars from bending. A local fasteners company supplied be with some nylon spacers and longer bolts (M8x30, although these will be replaced with 35mm long shortly) A before and after I pre-drilled the front bracket before making a start on the driver's seat to save some time. And in no time at all that was in the car too. The all black seats have transformed the interior and these are MUCH more comfortable. The only downside with the new Corbeau seats is I sit a little higher, but I'll happily accept that over discomfort. The Youtube video can be found here: https://www.youtube.com/watch?v=wPyttKPktXA
×
×
  • Create New...