The Mafia's Povo Rb30 Build - Cheap, But Not Nasty - Some Real Simple Questions

[Axis-D]

for a cheap cheap job you could just drill the hole for the tensioner new timing belt, gaskets etc, and whack it all together

Where exactly does one drill the hole ?

And do you use the same tensioner and RB25 timingbelt ?

Edited November 14, 2009 by Axis-D

[TiTAN]

that info is in the PDF file in the first post of the RB30 thread at the top of this section

[Axis-D]

ive heard a Laruel/Cefiro crossmember will bolt in(R32) by doing this no modification is required to the engine mounts. Is this true ???

[fletch rb30]

ive heard a Laruel/Cefiro crossmember will bolt in(R32) by doing this no modification is required to the engine mounts. Is this true ???

all the rb blocks have the same engine mounting points, so any rb will fit any rb engined car, the only difference is the heigth of the block, rb30 being 38mm taller than 25 and 26 (and 20??)

[Axis-D]

Yes i know that. Im talking about engine hitting the bonnet, will fitting the Laruel/Ceffy crossmember give enough room?

[fletch rb30]

I think it fits r33 ok. i have seen a few done that dont appear to have any bonnet mods.

On my 32 i peeled back the insulation under the bonnet and cut out a small section of the bracing and put the insulation back on. i think i have about 5mm clearance to teh cam pulley cover.

[The Mafia]

Hey guys. here is an update on the build.

1. I decided to bore it and get new pistons - Precision branded. They aren't forged, but a full set of 6 cost me $250. Hastings rings.

2. The Block has been decked

3. All of the exhaust valve guides where cracked, but they simply ground them right back, and countersunk them for a carbon trap.

4. RB26 oil pump was stuffed. Getting another.

5. Did the internal VCT oil feed mod.

6. Head is being shaved to raise the compression to 8.6:1.

7. no balancing.. They built it before I could give them to go ahead. Hoping it should be ok though.

8. Crank Collar Fitted.

Will have the engine in about 3 days.

[The Mafia]

just a couple of questions:

1. is there a difference between the RB30 and RB25 Flywheels?

2. Same for the harmonic balancer?

[TiTAN]

1. i just used the Flywheel from my 25 on the 30, make sure you check the spiggot bush in the crank make sure it suits the 25 gearbox

2. power steering belt is different on the 30 (v belt)

[jangles]

get a harmonic balancer to suit your ancillaries. 25 - 25, 30 - 30

Edited January 8, 2010 by jangles

[Just_Rb]

Hey guys. here is an update on the build.

1. I decided to bore it and get new pistons - Precision branded. They aren't forged, but a full set of 6 cost me $250. Hastings rings.

2. The Block has been decked

3. All of the exhaust valve guides where cracked, but they simply ground them right back, and countersunk them for a carbon trap.

4. RB26 oil pump was stuffed. Getting another.

5. Did the internal VCT oil feed mod.

6. Head is being shaved to raise the compression to 8.6:1.

7. no balancing.. They built it before I could give them to go ahead. Hoping it should be ok though.

8. Crank Collar Fitted.

Will have the engine in about 3 days.

whos doing the the block/engine work as im thinking of doing the same also how much will the finished bottom end cost?

[zebra]

Hey guys. here is an update on the build.

1. I decided to bore it and get new pistons - Precision branded. They aren't forged, but a full set of 6 cost me $250. Hastings rings.

2. The Block has been decked

3. All of the exhaust valve guides where cracked, but they simply ground them right back, and countersunk them for a carbon trap.

4. RB26 oil pump was stuffed. Getting another.

5. Did the internal VCT oil feed mod.

6. Head is being shaved to raise the compression to 8.6:1.

7. no balancing.. They built it before I could give them to go ahead. Hoping it should be ok though.

8. Crank Collar Fitted.

Will have the engine in about 3 days.

can i ask where you got the pistons from?

Im picking up a 30 next weekend

[The Mafia]

I didn't get them - The Machine shop did.

[zebra]

Got the engine yet?

Im ordering the same pistons

I hope they are all good but for $215 delivered i might buy 2 sets lol

[Dj laBBy]

Where and who did you get the precision pistons through?? anyone heard of these being ok?? Can't say i've really heard of them.

[zebra]

http://www.precisionintl.com/HTML/locations.html

they sell direct or any repco, auto1 or autobarn can get them...they are only cast factory replacments. They do a "hypatec" or forged piston for rb30et only, so the cast ones are the only real option for a hybrid....unless you want 7:1 comp

[Dj laBBy]

http://www.precisionintl.com/HTML/locations.html

they sell direct or any repco, auto1 or autobarn can get them...they are only cast factory replacments. They do a "hypatec" or forged piston for rb30et only, so the cast ones are the only real option for a hybrid....unless you want 7:1 comp

Cool, its for a rb30et only anyway.

Will give them a call tomorrow

Thanks

Rob

Edited January 20, 2010 by Dj laBBy

[MBS206]

http://www.precisionintl.com/HTML/locations.html

they sell direct or any repco, auto1 or autobarn can get them...they are only cast factory replacments. They do a "hypatec" or forged piston for rb30et only, so the cast ones are the only real option for a hybrid....unless you want 7:1 comp

Precision make a forged RB30DET one as well (Or did when I looked it all up about 6 months ago) I had pricing for them.

[unique1]

im using the same pistons (endurotech i think they are called, made by Precision) in my 26/30, they were cheap and due to the lip on the bores i needed to go .20 oversize anyway and forgies were alot more, and then you need rods as well, so i said for $200ish they are worth it.

If it blows up who cares

Mines running 22psi with a gt3076r and is fine (though cam timing is not right so lacking power).

I've just put together a second 26/30 right now with another set and going to be running a hks t04z on it and push it pretty hard and see what it can do.

[MBS206]

im using the same pistons (endurotech i think they are called, made by Precision) in my 26/30, they were cheap and due to the lip on the bores i needed to go .20 oversize anyway and forgies were alot more, and then you need rods as well, so i said for $200ish they are worth it.

If it blows up who cares

Mines running 22psi with a gt3076r and is fine (though cam timing is not right so lacking power).

I've just put together a second 26/30 right now with another set and going to be running a hks t04z on it and push it pretty hard and see what it can do.

I like the way you work...

Sounds a bit like mine, except I didn't even rebuild it... Just need to change a few things, then push its limits...