Hi
I'm building my 122 and want to make it get as much power/performance as possible and still be a daily driver. So far I've: rebuilt a b20 bored .030 over. Have ipd performance cam kit, lighter fly wheel and performance clutch setup, coupled to an M41 trans. Have a Stahl header with 2'1/2" collector and free flow exhaust, MSD ignition with rev limiter, Weber 45 DCOE's. Also have the usual ipd suspension upgrades. I've seen a twin screw supercharger unit on John Parkers V-performance website. Does anyone on here have that system yet? What other mods are good to do? Thanks

Ozzi
'66 122

The SC kit has not yet been released, but I did see that the beta ones are being shipped after a long wait from parts from outside sources. See www.vclassics.com under the editor's desk for details. That's where I read it.
--
Justin 70 1800E, 66 122E

It is a little late now but if I were going to bore a B20, especially
a later block, I'd go to 3.622" for 2130 cc. The biggest drawbacks are
cost of pistons and headgaskets. I assume you have a B20E or B20F milled
head and have ported it somewhat. I hope you got the lifter/pushrod kit
with the cam.

Why'd you get a rev limiter? Doubt if it will tear itself up with revs!
More likely, like I did, by running something through it (in my case it
was a 5/16" hex nut.)

Sorry, don't have any supercharger experience. Lower end is good and
strong though.
--
George Downs Bartlesville, Oklahoma

yes i have the cam kit with lifters and all, , i've been thinking about going with a longer stroke, are there any drawbacks to doing this? will the idle be more rough?

The idle won't be rougher for longer stroke but you gotta remember that you
are working with the all time leader in sturdy lower ends and are taking
a lot of that sturdiness away, plus having to find stroker rods, pistons
or some other way to deal with the difference, PLUS the absolute need
to balance the engine, etc. This is (I believe) a hardened, or at least
a heat-treated crank, so there are implications with welding it also.

I'd recommend going with a big bore instead, to get the desired cubic
inches. It is MUCH simpler and less expensive. Also using OEM or nearly OEM
parts, for the most part.
--
George Downs Bartlesville, Oklahoma

I've heard the B18 was developed from a Volvo truck V8 engine - its basically one bank with the bottom end built for two.

Other than John Parker's supercharger kit the most interesting performance parts I've seen for B18/B20 engines is at www.KgTrimning.com . Its a Swedish company that sell parts I've just not seen for sale at all. And their prices are very reasonable as well. For example - the overbored B20 headgasket you mentioned - IPD had them for $100 but no longer lists them at all on their website. KgTrimning has them for $56. And talk about interesting - they sell overbore gaskets for B30's as well! B33?

Some other things I see browsing through their fascinating catalog (in Swedish - but decipherable)
- B20 modified heads - in 5 degrees of heat - ported, polished, shaved, bigger valves (up to 46 I, 40 O), reshaped combustion chambers. From $466 to $1419.
- B30 modified heads - same as above in 3 increasing levels of modification. From $895 to $1324.
- B20 heads specially modified for use with Turbos - lower compression - Intakes not so big but big exhaust valves. from $638 to $854.
- B30 turbo heads as well - $854 to $1200.
- B20 Cams - 7 different levels from street use to wild race only cams (13.9 mm lift, 320 deg. duration!) - $170
- 5 different B30 cams - $285
- All the stock Volvo cams - A, C, D, K, F, R, S for only $66
- Steel B20/30 cam gears (very hard to find) $174
- Head gaskets for overbored B20 (B22) - $56
- Head Gaskets for overbored B30 (B33) - $164
- Stroker B20/B21/B23 cranks (from 80mm to 86mm) - $618
- replacement rocker arm assembly - stiffening aluminum girdle and 1.6:1 leverage roller tipped rockers - $273
- Weber 45DCOE - $419 ea
- B20 DCOE manifold - $157
- They even have something called 'Lumenition' - it looks roughly like a DCOE body with an injector mount. I guess its some sort of high performance tuneable FI system - they list a pair of these (each 2 throated like DCOEs) for $759 - but I can't tell if that is just the throttle bodies or the complete system???
- B20 headers - $218
- B30 headers - $428
- Bilsteins (for PVs!!) - $94 each
- etc, etc, etc

Shipping is quite reasonable as well.

Sorry the post rattles on so long - the catalog is like a candy store.

John Mc.