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Turbo Conversion Question

Question for all the 930 guru's

I have been collecting parts to start a 3.0SC turbo conversion and listed below are the parts that I have already pieced together and some pictures. My question now is in regards to the injector and injector blocks. My plan is to use the intake and fuel head from a 86 930, I am told that from the picture it is a Euro fuel head that flows more fuel so I a now worried about what year injector and injector blocks I should use. Are the 78~86 injector and blocks different and since I will use a 3.0 should I go smaller or larger?

Any suggestions or recommendations will be appreciated. Once I start the install I will also start a new post with plently of step-by-step pictures

(1) 86 930 Intake
(2) Intercoller "Stock but polished"
(3) Garrett TO4E turbo
(4) Ordering GSF headers with T4 Flange
(5) MSD BTM to manage timing under boost
(6) Still need wastegate
(7) Still need wideband A/F monitoring







Old 08-03-2007, 02:56 AM
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Crotchety Old Bastard
 
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All injectors from '78-'85 are the Euro type (I don't have the part number handy).
'86-on has a different part number for the US injectors.
Be very careful buying used phenolic injector blocks. They crack with heat and age and must be replaced (so find out why they are for sale).
The stock intercooler you show is OK for a low boost application but may prove inadequate for higher boost or in a hot humid climate such as Florida.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 08-03-2007, 06:35 AM
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Thanks Rarly, I would love to find a set of the aluminum PowerHaus style blocks but they are hard to come by. Will consider a larger intercoller later down the road but for now I am only targetting 8~10 pounds.
Old 08-03-2007, 07:44 AM
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Injectors need to be the correct year model to match the fuel head assembly per Rarely's advice.

I've had both 79 and 89 injector blocks in my hand. The 79s measured 38mm inside diameter and the 89s measured 32mm inside diamerter. Best as I recall the threaded hole for the injector was the same on both models.

In the picture of your intake assembly it appears you allready have injector blocks. Can't you use these? Billet aluminum blocks won't make a lick of difference because the mating ports on the intake manifold are likely a limit at around 32mm unless you decide to enlarge them.
Old 08-03-2007, 08:37 AM
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I dont know if i would go with a stock intercooler here in florida above 85F the stock ones actually add heat. you know the old story about polishing a turd.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's.
05 Cayenne S lapis blue
Old 08-03-2007, 09:00 AM
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Can anyone confirm from the picture that the intake is a 86? Is there somewhere I can look at on the intake to figure out what year the fuel head is from so that I match the right injectors?

When I purchased the inake the injector blocks were removed.
Old 08-05-2007, 07:53 AM
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Crotchety Old Bastard
 
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You have a Euro fuel head pictured. The part numbers for all Euro injectors are the same regardless of the year.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 08-05-2007, 09:31 AM
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Crotchety Old Bastard
 
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Here are the intake port sizes for the SC:

930/03 to 930/06 = 39mm
930/07 to 930/17 = 34mm

For the 930:

930/50 to 930/68 = 32mm
Every 930 produced from 1976 to 1989 had 32mm intake ports.

I have a set of new Euro injectors that I never used. They have been flow tested. E-mail me if interested.

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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 08-05-2007, 09:44 AM
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