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N1 Oil Pump - Epic Fail

Rezlo

By Rezlo,
in Engines & Forced Induction

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STATUS Grand Master

STATUS

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Chinese cast iron blocks are not a nice thing from those I've seen, the same with cylinder heads. There are copies of the Dart Chev blocks coming from China now and they look good but the hardness just isn't there and the geometry apparently isn't great. There's a long thread about them on speedtalk at the moment.

Some stuff from China is really good, including many of the cheaper US branded conrods but a block is a lot more complex item. There are even fake ARP bolts being made there, it's good to know that the Spool rods run genuine ARP bolts, they arrive in the ARP packet separate to the rods. Some other rods around have bolts that look a little suss, they have ARP stamped on the head but not the finish you would expect on the rest of the bolt or no brand at all.

haha yeah i just rejected a whole lot of PROCOMP gear (heads, sheet manifold etc) as it was all junk. It is just a joke, but other gear from the right place (non procomp) is actually quite good ie stroker cranks and so forth all seem to be spot on

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Marko R1
Marko R1

fuel cut explains the massive flames that gtr's shoot out on the limiter - most gtr's u will see in japan run this way. so my guess is that fuel cut is acceptable but not sure if its better or worse t

zebra
zebra

errr....might want to re-read what you just wrote Marko. No fuel = no flames

JonnoHR31
JonnoHR31

same shit for an oil pump, engine is still stopping and starting in the same way. the only difference would be between different ecu's, for example, a stocker rb30e ecu cuts fuel to all cylinders when

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proengines Rising Star

proengines

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I read somewhere that Dart were boycotting (or getting people to boycott) the Chinese copy blocks and buy original Dart stuff.

Dart are smart, they have dropped the cost of their blocks to gain back the market, great idea if you can afford to do it. The rest of their products probably cover the cost.

The thing with Chinese stuff is, if you specify exactly what you want and supply drawings etc, then get samples, then keep a check on the quality, you get a good product at a good price. I've used some chinese 4g63 and Subaru cranks and they are not bad stuff. Spool rods, wherever Brad has them made are made to his specs and are better than the competition. He does supply specs, drawings and such for what he gets made. I know this for sure because I did a little cad stuff a while back for him.

The problem with some parts is they make them to a price rather than a quality, it used to be the same with Taiwanese machinery, it was junk, now it's some of the best around. Chinese stuff will get better as time goes on. Look at their space program, at least one out of every 3 rockets they launch now actually makes it into space and doesn't crash into a town near the launch site. One day it will probably be 2 out of 3..

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Marko R1 Grand Master

Marko R1

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The thing with Chinese stuff is, if you specify exactly what you want and supply drawings etc, then get samples, then keep a check on the quality, you get a good product at a good price.

i did this for my i/c silicone hose kit, worked out well in the end

Chinese stuff will get better as time goes on. Look at their space program, at least one out of every 3 rockets they launch now actually makes it into space and doesn't crash into a town near the launch site. One day it will probably be 2 out of 3..

haha greg what a statement lol...thunderbirds are go!

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WizardBlack Rookie

WizardBlack

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Are any of these engines with failed pumps using bypass filtration? I understand the design spec issue and tolerance theories, but the comment about gerotor sensitivity to junk makes me wonder if it might be partially mitigated by better filtration?

Edited by WizardBlack
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Swiper the Fox Grand Master

Swiper the Fox

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Does anyone have an idea why the nitto pump has been changed to use a billet cover plate rather than the cast one they originally had? Call me paranoid but I just fitted one that had a cast cover plate.

the cast plate ones are fine...relax greg...ive used quite a few of them. Ill find out the reason for the change of you like. The answer...evolution...Nitto are constantly reviewing their product range to stay well ahead of the competitors offerings. Anything that can be seen to be improved will be upgraded/updated.

Edited by DiRTgarage
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proengines Rising Star

proengines

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I'd be very interested to know Paul, thanks. The new flyer is a little better written anyway, it would be nice to know the grade of metal used for the gears, just saying "EN series" allows a pretty big variety of materials.

The pumps look the part, I still think the relief pressure they are set at is way too high though.

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Swiper the Fox Grand Master

Swiper the Fox

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I'd be very interested to know Paul, thanks. The new flyer is a little better written anyway, it would be nice to know the grade of metal used for the gears, just saying "EN series" allows a pretty big variety of materials.

The pumps look the part, I still think the relief pressure they are set at is way too high though.

they are the same as a stock SR20 pump...no drama's with them...even at tight factory bearing clearances. Im happy with them after speaking at length to Nitto about it.

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shanef Grand Master

shanef

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I'd be very interested to know Paul, thanks. The new flyer is a little better written anyway, it would be nice to know the grade of metal used for the gears, just saying "EN series" allows a pretty big variety of materials.

The pumps look the part, I still think the relief pressure they are set at is way too high though.

"NITTO has now released a new billet alloy backing plate allowing further stability to oil pressure and flow at high rpm levels by minimizing any possible flexing of the housing"

Does this mean that they were finding their original ones with the cast backing plate were flexing?

Also i remember reading from one of their previous pump descriptions that they were using EN46 for the gears...

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Swiper the Fox Grand Master

Swiper the Fox

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"NITTO has now released a new billet alloy backing plate allowing further stability to oil pressure and flow at high rpm levels by minimizing any possible flexing of the housing"

Does this mean that they were finding their original ones with the cast backing plate were flexing?

Also i remember reading from one of their previous pump descriptions that they were using EN46 for the gears...

"possible" is the operative word here. Im sure they didn't have an issue...but more the fact they wanted to prevent anything being the weak link in the chain.

yep Shane EN46.

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Swiper the Fox Grand Master

Swiper the Fox

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Dave you typed a lot...for no response...if you have some info and you have decided not to post it feel free to PM me.

Here's Nitto's distributor website...its black and white.

http://www.tweakit.net/shop/product_info.p...roducts_id=7204

to be honest i couldn't give a rats arse if i found out they were produced by blind buddist monks in the mountains of Tibet...they are an excellent product that ill continue to use on all our engines.

Edited by DiRTgarage
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