I love my Mondial ;-) Ferrari's insistence in showing a monster V12 in the front of their newer 2+2s, plus the lack of those extra seats in the newer V8s, means I'm going to be sticking with the old girl for a while. Plus she looks so nice So my mind naturally turns to upping the power of the 3l QV lump - she may be 20 years old, but that's no reason to not keep up with some of the newer toys. I'm playing with the idea of getting some work done this winter. I know several people have dropped turbos or superchargers into theirs - that's not so much my concern, it's more the rest of the car. Doubling the power output of an older car is sure to highlight the limits of clutch, transmission, gearbox etc. Obviously I'd be getting the suspension overhauled and tightened up a bit, as well as uprating the braking system. But I don't really want to be burning through clutches every week, and a gearbox every month So I'm looking to get an idea of the longer term implications of such work. How to people's tweaked QVs and 3.2s stand up to the extra power? What extra mods have you had to do to the rest of the car? How does the engine itself stand up to the extra stress? Cheers, TOM
Tom, I put about 15k miles on my supercharged qv with the engine making about 350-360 hp with no problems. I did however upgrade to little bit better clutch when I did the engine work. I have since upgraded the supercharger bringing the hp to about 520 and now have about 3k miles on it. The clutch lasted 2 weeks, but that was mostly low power tuning, I don't think it saw more than about 5 minutes at full power before failing. The new even better clutch seems quite happy, I had it out a couples days ago and saw very little wear after 3k very abusive miles. Everything else has been fine. I have upgraded springs/shock and I definitely recommend if you are adding power you do the same. My brakes are still stock and seem adequate since I don't run the car at high speed, although an upgrade is planned honestly its mainly so the 18 wheels dont look so empty more than I feel the need for more stopping power. Hope this helps, Mark
If you do a seach, I posted a couple threads whils I was building it. I made a custom intake and mounted a lysholm (whipple) ax2300 blower with a garret water/air intercooler mounted in the manifold. I am using a haltech E11 ecu. I use the original crank pickup (I had to add 2 dowel pins to the back of the flywheel) and add a cam position sensor - I used a ford distributor pickup, $20.
Scarry but true It made 425 rwhp, using 18% driveline loss, thats 518 crank hp and 434 ft-lb torque. I've done a little more work since then, I haven't had time to get back to the dyno, but I think it's probably picked up another 10-20 hp...I had an EFI sensor problem that was causing the roughness you see on the dyno graph from 5500 up, it's fixed now. It's a very different machine than a stock 308. Image Unavailable, Please Login
Ernie, you're right, I forgot about that. When I did the rebuild I did use total seal rings, but that was just because they work good and they were actually cheaper than stock, not that the supercharger needs them.
It was a tilton 7.25" triple disc carbon-carbon unit. It's a really nice unit with very low pedal pressure and is now going into my 800hp 308 V12 conversion on a custom flywheel. I posted a thread when I first did the install, it might turn up in a search. Image Unavailable, Please Login Image Unavailable, Please Login
same here, even though my engine was built along with the turbo, it was built to stock or close to stock specs, twenty years strong and with 12k miles, its just breaking in. 360 rwhp when originally built. unfortunately, the previous owner replaced the original Norwood clutch with a stock one right before i bought the car last year. since i (re)tuned it for a lil extra power at the end of last summer i have about 6 of 7 hours of driving time this winter. after an afternoon of some pretty hard driving about a month ago, i can feel the stock clutch start to slip. the rest of the car is all stock and functions great. as previously posted, i am contemplating changing the half shafts as well. how do the stock half shafts hold up with the 500+hp engine? would you (or anybody else who's upgraded) recommend upgraded half shafts or are the stock ones sufficient? any other weak links? even though the car is old, it is also low miles and everything is in excellent shape. ----except the clutch!!!!! btw what size injector are you running? i can understand if you didnt want to post that publicly (maybe a pm). M, you gave me some great advise as far as injector sizing in the past, thx!!!!
I never broke anything (other than the clutch) at 550 hp .well soon see you it does at 800ish I have no secrets For fuel I used: 36lb at 42 psi on the 350/360 crank hp engine 55 at 60 psi (so more like 62 lb) on the 550 crank hp engine.
