Tomei Oil Pump, Stock Sized Oil Pan?

[mitch32]

Hello,

As the thread title says; is it a good idea to run a Tomei Oil Pump on a stock sized oil pan? Does anyone here run a Tomei like that? Obviously this setup would be with a Oil Restrictor in the Head, Enlarged Oil Drains, External Rear Oil Drain, and Tomei Pan Baffle.

Thanks
Mitch

[Allan74]

There is nothing wrong with running a Tomei pump on LOW setting, in a STREET CAR with a standard pan.....if buying for nothing but strength.

It's the sustained HIGH RPM at the track that will suck the pan dry.

Rear head drains are gay, a myth....and were never used in Japan.

Get proper prep done to the oil drains in the head.
Allan

ps. Remember, no one has ever reported a broken a NISMO Oil Pump and Sean Morris used to run one on a track car, that saw 9,000 RPM from time to time. Even HE was impressed.

[mitch32]

Yea, my actual primary choice was the Nismo but I was discourage by a few retailers. They said that the difference in price isn't significant therefore the Tomei was the better choice. I'm stuck between the Nismo and the Tomei (or even the new HKS recently release looks good). My car is going to be tracked but I don't know if I can justify the cost of a Tomei + an extended sump versus the Nismo, since the car won't be a track whore. The car will see a few drags a year, and a few lapping days (a few being 2-5 time maybe a year). My buddy who builds cars (not Nissans though) basically said you have to make a decision without going overboard because you can go overboard on everything. I spoke to you Allan in a PM and you gave me some advice there, and I think I still will go with the Nismo. I just wanted to see what my options are still. I can go with a Trust Oil Extension for relatively cheap but it hangs low, so for a street car thats bad, the RIPS extension doesn't hang low but is expensive + welding for it is not simple so more money there.

Nismo is looking promising!

[Allan74]

The price difference is nearly $500 for Christ's sake....... what retailer said Nismo and Tomei were 'close' ?

[mitch32]

I got quoted from Z-tune 1280$ish for the Nismo, and 1550$ish for the Tomei. So ~270$ not a big difference. I also got quotes though for the Nismo for 980$USD from nismoparts.com and Tunerlab.jp quoted me 1100$CND for the Nismo. CND dollar though is nice a strong today, so ordering from the states is good but I like ordering from Z-tune or Tunerlab.jp since there very helpful.

[Allan74]

Order from Nismo parts.....they are offering a TRUE Japanese FAIR market price, similar to RHDjapan (you can also try them, $947+shipping USD).
http://www.rhdjapan.com/nismo-high-flow-oil-pump-rb26dett-55680

[mcfly]

someone should invite them here, all the people listed above.

I am fond of the Jun pump. There was a failure somewhat recently (past couple years) but that had external factors like a sledge hammer to the damper pulley and a crack oil pump housing.

[Allan74]

The main reason I almost ALWAYS order from Japan or the US is because I seem to get away LUCKY in terms of Import Fees and even when I DO pay them, it's still cheaper than paying Canadian Markup + GST.

I am into my project for THOUSANDS......and I have saved THOUSANDS.
Look here at my 'aquired' list (stuff I have ready to go):
GTRPWR Forums


My favs are: RHDjapan, followed by Ebay and Sellers that I have become Customers with outside of Ebay (Titan Motorsports, Poorboy Parts etc.).

I can probably count on 1 hand the items I have paid GST on and purchased from Canadian sources. Do the math, listen to someone who knows.
Allan

[mitch32]

someone should invite them here, all the people listed above.

I am fond of the Jun pump. There was a failure somewhat recently (past couple years) but that had external factors like a sledge hammer to the damper pulley and a crack oil pump housing.

Yep, I read his posts on gtr.co.uk. His name is kismetcapitan, basically he's had all the bad luck you can imagine. Broke an N1 Pump, then installed a Jun Pump with an old original stock damper which was hammer on. After a bit the Jun gears shattered but still gave him oil pressure. He then went with a Tomei pump with every thing you can think of accusump, baffles, extended sump, etc....

Still though I believe the Jun is high volume pump, so its my same question as with the Tomei Pump can it be ran with a stock sump and tracked safely (with a RPM limit around 9000rpm).

[Allan74]

From what I have read, I would not take ANY pump, except for the Tomei, over 8500 RPM......there is really no need to most times. Even the Tomei is only safe up to 9000 or 9500 RPM TOPS....

8000 RPM is more than enough of a Redline for most people. Just watch your Dyno Graphs, most people's power falls off after 7000 RPM anyways, so spinning faster is pointless, unless you are CAM'd up and purpose built to spin that high.....and still making power.

[BNR32]

I will likely be going for the JUN pump (still might go Tomei, not decided). Don't know if I agree that head oil drains are a waste, lots of the circuit guys in AUS swear by them.

[mitch32]

I will likely be going for the JUN pump (still might go Tomei, not decided). Don't know if I agree that head oil drains are a waste, lots of the circuit guys in AUS swear by them.

The only thing that doesn't make sense, is that there already is a stock head drain at the back of the head (you can even extend the stock drain), so why the need for an external one. With that said you can put a external drain for almost no money if you go to home depot and buy some plumbing fittings.

[BNR32]

http://www.skylinesaustralia.com/forums/Oil-Control-Rb-s-Circui-t110680.html&

Thats where I got my info. on them from. Happy reading, its long haha.

[mcfly]

The only time I would drain the head is with a scavenge from dry sump. Stop the oil from coming down into the pan completely out back.

From what I have read, I would not take ANY pump, except for the Tomei, over 8500 RPM......there is really no need to most times. Even the Tomei is only safe up to 9000 or 9500 RPM TOPS....



You are too cautious Allan, the JUN pump will do 10k, any more and you risk cavitation. The pump has no issues with the rpm.

[Allan74]

You are too cautious Allan, the JUN pump will do 10k, any more and you risk cavitation. The pump has no issues with the rpm.

I will be the first to admit it......I have been scared into buying a Tomei because of the investment that I have made so far and am continuing to make. The fear tactics have worked on me. If I don't mount a Tomei, I won't be able to sleep at night...lol

[mitch32]

I will be the first to admit it......I have been scared into buying a Tomei because of the investment that I have made so far and am continuing to make. The fear tactics have worked on me. If I don't mount a Tomei, I won't be able to sleep at night...lol

lol, thats pretty much where I'm at. I'm losing sleep right now can't decide on what to do. I have over 14k$ into my build, I driven the car less then 3000km since I've owned it.

The Jun btw is pretty much in the same class as the Tomei, the Tomei is slightly better because it's got the external relief access and its also got a slightly different gear setup from all the other pumps. In terms of volume the Jun is the highest I can find, the Jun pumps 59l/min at 6000rpm the Tomei does 53l/min I believe. So the Jun if anything needs the extended pan more then the Tomei. The Nismo is a proven pump also (because of racing), its also not a very common pump, so maybe thats why we hear of almost no Nismo Oil Pump failures. I spoke to tyndago and he told me in his personal car he runs a Tomei Pump on a stock sump with an accusump, the accusump is a weird device and only gives you a certain preset oil pressure.

This all puts me back at the beginning of my confusion.

[333]

Do not forget to get an external oil restrictor if you using a bb turbo. The built-in ones do not work that well. I was having issues with too much oil going to the turbos. I'm using a tomei pump without the additional washers installed and no sump extention. I do however have a rear oil drain installed and I also spent a lot of time cleaning out and porting the oil and water gallies on the head.

[Allan74]

Well, I can say for certain, that the Oil System is definately something I am not skimping on and that was proven the day I shelled out the cash for the RIPS Oil Pan.

I'm kinda on the fence still, in regards to an Accusump....... I may run one as a pre-oiler, for start ups, but probably NOT for a safety device, as I plan to run ALOT of Oil Line and it would be nice to fill 'em up prior to turning the key every morning.

Oversized Sump (7+L), 15+ft of -10 Braided Line and twin oversized filters......I should be in the 10L + range......plus the Accusump, like I said, to charge the system before a turn of the key.

I am also thinking that a check valve on the main output out of the block (to filters/coolers etc.) will help keep all the oil in the lines etc at shutdown........and keep the drain back from drowning the crankshaft when the car is off (not sure if it's needed though)....

[mitch32]

Allan your setup will be bulletproof, just for me not sure if its neccessary. I could of easily built my motor for another 10k$ on top of my 14k$ I already have and still have the same power and reliability. I'm still on the fence, I'm going to price out the Nismo today, the tomei is going to be 1450$ + shipping + RIPS SUMP for 750$ NZD + 300$ for welding = ~$2500 and that will be pretty close to bulletproof (but I'm also on a tight schedule not sure if I have time to put in for this).

[mitch32]

Decision is time is over. I hope I won't regret it later, heh. I went with a Nismo Oil Pump paid 980$ I'll have it in a week.

[Allan74]

Decision is time is over. I hope I won't regret it later, heh. I went with a Nismo Oil Pump paid 980$ I'll have it in a week.

Good Deal. Where from ?

[mcfly]

Before you install it we would love to see some pictures of the gears

[Allan74]

Yes and overall thickness and diameter measurements......

[mitch32]

Yea no problem, I'll take some HD photos for you guys and I'll measure the gears.

I ordered it from Nismoparts, I've ordered from them before so they may have given me a break on pricing. I really wanted to order from Z-tune but their price was a lot more, and lately with FedEX I've been paying 0 taxes and duties.

[rb-racer]

I like nismo parts, seem i always get a sweet deal. I don't understand how others can't even come close.

[mitch32]

Someones marking prices up somewhere. Nismoparts deals directly with Nissan Japan and distributors for Nismo directly so they have the lowest prices. If we went to Japan we would pay even less (since theres no shipping fees). I paid about 850$ for my r34 crank when it was all said and done from nismoparts, everyone else was 1000$+.