RB 28 BUILD

[peter mc]

THIS will be one mad zed ... tom asked for a strong RB26 and had lots of parts for the build ...the problem with the 26 is its a little bit asthmatic down low in the range with big turbos ,so how do you fix this ....more cubes more stroke so we got a new billet fully counter balanced crank new i beam rods and custom CP forged pistons

 

so the spec sheet reads like this

N1 oil pump with upgrade gears new custom sump

N1 water pump

adj timing gears

cams  270 10.85 tom pro

ported chamber and ports new guides bronze nitto type hks valve springs and titanium retainers also 1mm bigger inlet and exh valves 

turbos are -5 garret with hks dumps

crank custom 2.8 billet

rods are custom i beam

pistons are CP 87mm

ATI 1000 hp ballancer

nitto full gasket kit

motec will run the show , it will run boost control as well

1000cc ID injectors

twin plate nismo copper max clutch

 

power 300kw+ on 98 with mad responce 

 

so i will post lots of picks as things progress the first photo is where it all starts

[peter mc]

bit of work today spent some time removing all the casting marks from the block and removed all welsh plugs . next step in the bath and have it bored and hone and then i will paint the inside of the block ,,, i also ported the oil return side of the block as the Rb has problems in this area. and have fitted a 1.2 mm oil feed in the block

[peter mc]

well work on the Rb28 this week ,,, more porting and more porting lol and i have modified the chambers so we can run more timing than a standard head this will let us make more power and the engine will run cooler ,work on the ports will be same as the GR A cars and the cams will be as well ...... this will be a hell of a fast car

[zr240]

Nice work pete. Good to see it step by step.

 

Ash

[peter mc]

this is the mod on the chamber ......i will remove the steps on both sides of the camber

[Scando]

Looking good Pete 

Thanks very much for posting up the pics.

[peter mc]

more pics 

just a note that the chamber mods for mild motors 15psi you can do the inlet side and race motors do both sides for high boost 20 +psi  on 98 pr fuel this mod will let you run up to a extra 6deg timing....

[garvice]

Wow, looking good Peter and I like your style (you are not afraid to share your knowledge). That comes across as a man who is confident in the quality of his work and isn't afraid that he has to keep secrets from his competition. The chamber mod, is the first picture yours?is that larger valves or just the angle? Does this lower compression much?

[peter mc]

hi garvice

first pic is a comp head with big valves and flows 310 cfm and will go on my NC28

as for the compression yes is lowers it, the step in the chamber helps turbulence at low rpm and boost ...but as things get going it can overheat the intake side of the piston and u will see det marks on all gtr pistons on that side, so this mod helps  remove det that you can not hear and you can run more timing and make more power for the same psi,,,,

if you wont you can buy pistons that will bring the comp up for race fuel with a 9.1 ratio with the mod to the chamber

with the stroke and bore and the piston i have ordered this motor will be 8.5 /1 and will take 20deg timing at 20psi  on pump 98 without the mods to the camber you can not get 14 degs timing

[Scando]

Thanks for the explanation Pete.  Makes sense that the sharp edge on the step would cause a hot spot.

So for a higher compression (9.5:1) and farily low boost engine (15psi or less) you would just do the inlet side?

[peter mc]

yer only the inlet side and just role the exhaust side so it has on sharp edge ...9.5 and e85 and you will have a monster at 15 psi on 3L you can run so much timing makes for a engine that feels like it its 6L and high comp

[Scando]

makes for a engine that feels like it its 6L and high comp

 

That's what I'm after 

Thanks again Pete.

[peter mc]

more head pics 

[peter mc]

with this type of motor it so in portant to have the best gaskets you can get ,i love the nitto stuff all mls gaskets for the inlet and exhaust and a head gasket that i have never had fail up to 50psi and 1000hp on one i built a while back

[handsandwhich]

Like a kid in a candy store.

 

I'd like some lollies please!

[peter mc]

yer i love when new parts come in, and this one has lots of cool parts. i dont think there will be many sports cars out there that will beat you

[dazzed]

THIS will be one mad zed ... tom asked for a strong RB26 and had lots of parts for the build ...the problem with the 26 is its a little bit asthmatic down low in the range with big turbos ,so how do you fix this ....more cubes more stroke so we got a new billet fully counter balanced crank new i beam rods and custom CP forged pistons

 

so the spec sheet reads like this

N1 oil pump with upgrade gears new custom sump

N1 water pump

adj timing gears Hey Pete what is a N1 oil pump and water pump?

GR A cams 

ported chamber and ports new guides bronze nitto type hks valve springs and titanium retainers also 1mm bigger inlet and exh valves 

turbos are -5 garret with hks dumps

crank custom 2.8 billet

rods are custom i beam

pistons are CP 87mm

ATI 1000 hp ballancer

nitto full gasket kit

motec will run the show , it will run boost control as well

 

power 300kw+ on 98 with mad responce 

 

so i will post lots of picks as things progress the first photo is where it all starts

[peter mc]

hi dazzed

are you asking about the pumps ?

if so the N1 parts are up rated Nissan motorsport parts < larger gears and more pressure >

NISSMO N1 parts were first used in Australia on our Winfield racecars with a new block with better water channels and thicker bores ,,,and bigger turbos with steal wheels and better oil and water pumps .....the standard block had problems cracking the around the deck bolts when pushed and the N1 was beefed up to stop this, so they could finish races with 2bar boost going in to them

[peter mc]

well i have found the valves needed to be replaced so iv gone for a 1mm up ss nitto

[handsandwhich]

Let me know if you want these mirror polished, you know how much I love polishing everything that is metal 

 

 

[peter mc]

so do you like the paint i think it should look like this ,,,what do you think tom

[handsandwhich]

That does look sweet, but it would be a sea of blue inside the engine bay.

 

If someone would send me the cam covers, I could get them painted the same colour as the car and then the polished front and valley covers (take a close look at the mod to the numbers on the timing cover) would break up the colour a bit.

 

[peter mc]

while the block and head is at the shop iv been working on the turbos and manifolds ,,,lots of porting and work on the HKS dumps to get the flow up

[RB30X]

So HKS are letting you down aye Pete?

I saw some Tomei dumps getting installed recently and they were works of art. No mods needed on those bad boys.

In fact the quality was outstanding, and they came with everything.

[peter mc]

mmm some times the Nissan part is the better part and you say the Tomei part is good ,,,well the Nissan manifolds with 10min of work makes more power ,,,lol mmm but they look so cool