fentin_fury

Not Mike doing the head work - Tony. I don't believe we will remove the quench pads - but they will get radiused - no more sharp edges. Q

I did the same thing. Q

Porting begins... some pics more to go!!!!! Q

looks like Eric has another sale. q

I am sure the pump would work - but the RB25 bracket is different. I need an Rb26 mounting bracket. I was told the pump/bracket I have is off an rB25 - the bracket does not work on my r34 block though. Q

just wanted to make sure they fit as Eric states he has made up the "kit" as it is not offered by ARP Q

Has anyone in our forum used these ARP main studs? Listed on ebay by - Eric's Performance Parts. Much less money than the Tomei stud kit. FYI - i posted in the wanted section for an RB26 power steering pump and bracket. If anyone has one they wish to sell please contact me. q

Some more information - offered by Matt - and I quote... "There’s quite a bit of misinformation floating around out there on RB oil pumps. Here’s the NO BULL info I have on the pumps. All of the pressure/flow info is taken directly from the manufacturers 2007/2008 catalogs with no additional info added, except where noted. Taken from HKS Stock Pump 600rpm pressure 1kg/cm2 flow 3.7 liters per minute 2,000rpm pressure 3kg/cm2 flow 12.9 liters per minute 6,000rpm pressure 4kg/cm2 flow 39.9 liters per minute HKS Pump 600rpm pressure 1kg/cm2 flow over 5 liters per minute 2,000rpm pressure 3kg/cm2 flow 17.3 liters per minute 6,000rpm pressure 4kg/cm2 flow 53.1 liters per minute Stock flows 9.87ml/rev HKS flows 13.1ml/rev Tomei Pump 6,000rpm pressure unknown flow 56 liters per minute JUN Pump Flows 125% of stock (my math says that’s 49.9 liters per minute at 6,000rpm) Nismo Pump Has stronger gears. Everything else is the same as stock. With the exception of my math on the JUN pump flow, the above is word for word out of the catalogs. This includes what Nismo says about the pump. Now for my $0.02 While JUN and Tomei don’t list the pressure, I would imagine it’s around stock. HKS uses stock pressure and it’s completely adequate. More pressure just robs power and puts additional load on the pump. Around $900 sounds steep to me for the stronger gears of the Nismo pump when I can buy the higher volume JUN pump for about the same price. However, this is the same pump Nismo uses in their Super Taikyu (endurance) race series engines (says so in the catalog). There’s a lot of information written between the lines in that last sentence. I have an HKS pump on my car, but that’s because it spins 10,000rpm. I have no written information on the N1 pump. However, here are my observations… The standard pump takes the shape of a gerotor, and the N1 pump gears look more like a Duocentric design. A Duocentric pump has several advantages over a standard gerotor. The first is volume. For the same size rotors, a Duocentric design can pump 8-12% more volume due to the gear shape. They are quieter at higher rpm’s and with the correct geometry, they tend to cavitate less. On the Nismo pump. Nismo says the gears are “stronger” or “uprated strength”. I don’t know if this means they’re of a better material or just hardened. However, in the Nismo catalog, they have this to say about the VQ35 pump: “Based on experience in competition with the RB26, this oil pump for the VQ35 uses SCM material for gear machining to help avoid the oil pump gear damage that can occur during overruns caused by misshifts and other conditions.” SCM is JIS spec for chromoly steel, and many race pumps are made of SCM435 (AISI-4137). This would lead me to assume the RB26 pump is not made with SCM material. However (once again…) the RB26 pump is more expensive. Who knows. The Tomei pump also specifies SCM435. While not specified, I’m sure the JUN pump has stronger gears than the stocker, and I’m sure they’ll tell you if you ask........." I have ordered a Tomei and expect delivery next week.... Q

It is looking very nice - I hope everything is going as planned (that always happens). In the spring we should meet up once both cars are on the road. Q

I was wondering why the "quench pads" were removed. Matt has always offered very relavent information. q

I new that existed here somewhere - thanks!!! my search was obviously wrong. q

Well i have started the rebuild of my BNR34. Not that it was necessary - just felt that I have been pushing the limit of the stock internals (430 rwhp). The stock long block has about 5-6000kms on it - so I don't expect any suprises. As part of this rebuild I am going to port the head. I have searched and been looking for pictures/comments/others' approach to this. I find little available - ie. sharpening the ridge between the intake ports, etc. I was wondering if anyone here has some detailed pictures of what they have done? Any info appreciated and as I move along I will post pictures here. Fyi the cams I am going to use are: TOM1421270102 Tomei Camshaft: Procam In 270-10.25Mm TOM1426270102 Tomei Camshaft: Procam EX 270-10.25MM Q

the shifter is near the top of the shifter hole - with the supra isollator. As for thickness I cannot comment. Q

Congrats to you - nice new year present! q

From Fresh Alloy - ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The Tomei Oil Pump Flows 56 Liters @6000 RPM! Wow! The pumps are instock and available today. What separates the Tomei unit from every other brand is the fact that the pump is adjustable externally, eliminating the need to remove the oil pan. This is perfect for the GTR guys running aftermarket oil coolers. This pump is considered by most everyone to be the highest quality pump on the market, and will take all you can throw at it. Each pump has it's own serial # for Tomei to be able to reference.

Tomei vs. HKS - i would believe the quality here is the same. But from the supplier I purchased from - HKS was not an option. I dealt with Troy @ xs-engineering.com. Q

They are offset - so you can rotate them and change the alignment/position of the engine. Q

Bob - long time... I am doing some research - will get some quotes together and email you and "careless" what I find out. Q

CP pistons - 8.5:1 +0.05mm Tomei Connecting Rod: Forged H-Beam Conrod Kit Tomei Camshaft: Procam Rb26Dett In and EX IN - 270-10.25m Ex 270-10.25 Tomei adjustable pulley set tomei valve springs - A-type tomei valve lifter set Bronze manganse valve guides (going to do some porting!!!) Throttle shaft seals tomei head gasket Oil gallery orifice need - oil pump, gasket set complete anyone want a brand new nissan head gasket - I have two that i won't be using. Quentin

Careless, I believe they are different - pictures of a dismantled N1 vs. Stock pump can be found out there - and the two pumps are not the same. I suspect the price difference between an N1 and a Nismo pump would indicate that these two pumps also have similiar differences. Don't take my word on it but I suspect that the Nismo pump will flow at much higher rates than the N1. I am also trying to decide on an oil pump - all of my rebuild parts have showed up (pistons, rods, cams, springs, etc.) so I hope to purchase a pump in January. I am leaning toward a JUN. Q

The CAS also looks like an R32/33 - but I will take a picture of mine today - R34. Quentin

Well I braved another lapping day at Mosport last week with the 240z GTR. I did not change much - the oil pressure guage, sending unit, etc. (now all Autometer). Mysteriously the falling pressure has disappeared. This is a good thing - and I believe true. So before anyone runs out in a panic to remove the oil from the head - run a mechanical guage. Note that my oil pressure was rock steady at 80psi once up to operating temperature. Q

I think I have one - let me check today and I will PM you. Q

I am running R32 turbos - modified with 30% larger compressor wheels, ported, larger waste flapper - and better down pipes. At 18psi I get 432 RWHP @ ~5500 RPM. Peak Torque at 4000rpm. q

i will try to make it - at least for part of the day. I have a few challenges my self to sort out - but should be done soon. Q