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Infidel
 
JBL930's Avatar
 
Join Date: May 2006
Location: UK
Posts: 1,172
Basic Necessary Rebuild Questions

As some of you know i'm not a spanner man, would love to have the time and space to be able to get stuck in but i sadly don't.
My 930 engine is now getting rebuilt (by professionals who usually build back to stock), it's stripped to nuts and bolts and it's time to decide what goes in, the engine will be keeping the CIS system but it already has most of the bolt on mods, and some machine work was carried out in the last rebuild, heads ported, intake manifold ported/extrude honed etc.
My main question to start was what rod bolts and head studs would you guys fit, i know ARP are the main players but would like advice on others if they are better.
I thought i would start a thread about the necessary basics, as nothing came up on the search, yes there is lots of information if you dig and read hundreds of threads but i thought i'd ask the Guru's what the absolute necessities are for a good strong CIS build, it may be a good reference tool for others needing a list of stuff, the aim will be for roughly 450fwbhp.

It already has

K27HFS Turbo (new)
B&B style headers
Fabspeed Duel Out Exhaust (new)
964t Intercooler
1.0bar spring (nets about 0.9bar) in wastegate and MBC (Engine will be for 1.0bar max)
964 cams
Rebuilt and Ported Heads
Ported Intake Manifold
Modified Injector Blocks
IA Fuel Head
IA Air Box
I know it needs either the Brian Leask WUR and RPM switch, or the Digi WUR, i'll decide on this later

Parts that are going in, please advise on what is missing, and what on the list needs changing to higher spec or other type

Big end
Bearings
Seals
Gaskets
Chains
Tensioners
Rod Bolts
Head Studs

Any and all advice is welcome, what have i missed, what would you do different? Cheers
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Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 03-11-2009, 03:31 AM
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A930Rocket's Avatar
 
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
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Sounds almost identical to my rebuild, including the porting. I went with ARP rod and head studs, as they are a known quantity. My AF ratios seem to be good with out a digi or Leask WUR to date using an Inovate AF gauge.

All the below I went stock parts (or reused in the case of the tensioners). EBS Racing has everything. Order a Master Rebuild Kit.

Big end
Bearings
Seals
Gaskets
Chains
Tensioners
Old 03-11-2009, 02:01 PM
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Join Date: Jun 2007
Location: Kauai, Hawaii
Posts: 410
Similar to what I am planning as well..... I am going with the large port SC Heads instead of the 930 heads, & SC cams. Turbokraft injector blocks to match the heads at 38mm. What is your target Horsepower?
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03 Tacoma, 04 Duramax, 06 R350 Benz
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Old 03-11-2009, 02:19 PM
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Infidel
 
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Join Date: May 2006
Location: UK
Posts: 1,172
Cheers for that chaps, so there is no need to fit anything special in regards to bearings, tensioners etc, new stock stuff is fine. Just uprated rod bolts and head studs.

Akila, i stuck with 930 heads because i have been told, from a top engine builder here in the UK, that the RR350 alloy used was necessary even at stock power levels. If you were to hold the car at sustained WOT, either on the track or on a german autobhan, then the lesser alloy used in the non turbo heads would fail. He went as far as to say that he simply wouldn't build a turbo engine with anything but the turbo heads, but then all his engines are race spec builds.
I know there are quite a few out there with NA heads fitted so they must work, i would feel nervous taking it flat out and holding it there though
__________________
Jonathan.
87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines.....
Old 540 BMW, XB12S Modified, for being a total hooligan
Old 03-12-2009, 12:45 AM
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