| Author |
Message |
Frank
| | Posted on Monday, January 22, 2001 - 6:16 am: | |
Thank You so much for Your help to find a decision.
Now i think its really the best to use my QV
engine and try to get a little bit more performance.
I have also thought about to sell my QV and buy a 328. But the 328 doesnt have the nice 308
styling. |
David Prall
| | Posted on Sunday, January 21, 2001 - 10:04 pm: | |
Frank,
No - the heads have a slightly different bolt pattern. They both use KE-Jetronic, but the specs for the sensors and components are different. The ignition systems are very different - the 308 uses MM Digiplex, but the 328 switched to the (better) MM Microplex system. The systems are not interchangeable. The engine wiring harnesses are completely different. Even if you were to some how adapt a 308 system to fit a 328 engine, the car wouldn't run worth a toss -- the valve timing on the 328 is wrong for the (nonadjustable) ignition timing curves of the 308 Digiplex system. I sympathize with your plight - the 328 is the better drivetrain, but a properly modified 308 4V will give you every bit of that performance for less $$$. Keep researching, and good luck. |
Nick Scianna
| | Posted on Sunday, January 21, 2001 - 5:38 pm: | |
Wow!Hey,some of you guys out there are making it sound like Ferrari's are pieces of junk or something or unreliable.What has happend to some of you is that you got bitten by the beauty of the Ferrari 308/328.If you buy a great car,they are not 20-25,000 dollars.Great cars are generally not that cheap,what are you going to replace a great running/looking Ferrari with? A Toyota!So what I am saying is,GENERALLY a Ferrari for sale needs work.Thats one of the reasons Ferrari's cost more at a reputible Ferrari dealership usually they are serviced and checked over before they are sold.But then again be careful some dealerships are better than others.I have not been on this new site very much as I am currently rebuilding and Modifying a 328 engine for a client at the moment among other Ferrari projects.The parts cost more for a 328 than a 308 period!To me being a builder of Ferrari engines I personally would just redo the top end of the engine and call it a day if you have a gasket,leaking problem and do some performance mods while the top end is apart.328 engine is diffrent from a 308 in alot of respects.As far as oil leaks go,its mostly due to the crankcase venting.new design in developement that we use in are rebuilds and modifyed engines.Ferrari 308/328 cylinder head will weep a little if they have been sitting for a long time with stock head gaskets.So do all other aluminum stud engines if they sit!Drive your Ferrari,A ferrari that sits is one that is unhappy!This is just a general responce back to everyone out there who has a Ferrari with some problems or is looking for some info on purchasing there first Ferrari.For approx 5 Grand providing your engine is not hammerd [308/4 VALVE] 328 would be more you should be able to have your car fixed by a great Theh,or you could spend 5 k and buy a bad engine.I will tell you right now 5 k does not even buy a good long block.I have put over 2,000 miles on my red Ferrari in the last 60 days.Its my winter BEATER! The compression on it is beween 165 lowest cylinder to 175 the highest cylinder.The engine to me is getting a little tired compared to something that I would have just built.The Ferrari valve guides are very soft and when the cars have sat the valve seals get hard which causes oil consumption,its fast,its my daily driver.It is my R&D car for Ferrari power developement products that we are producing.I hope that gives some of you out there some answers.Ciao Nick Scianna .Nicks Forza ferrari |
Frank
| | Posted on Sunday, January 21, 2001 - 1:29 pm: | |
No, this engine is not from a 328 Mondial.
And about the conversion.
Does the 328 engine not fit on the 308 header pipes ?
And both cars have a Bosch Kjetronic fuel injection system with oxygen sensor control.
I though these injection system should also work on the 328 engine.
And what's the different by the ignition systems ? |
David Prall
| | Posted on Sunday, January 21, 2001 - 11:56 am: | |
If you can get a 328 engine/trans for $5K, go for it. I'm skeptical about the condition (especially with only $5K miles). BE SURE IT IS IN GOOD RUNNING ORDER - GET A WRITTEN GUARANTEE.
Also, bear in mind that putting a 328 drivetrain into a 308 chassis is a FULL conversion. The ignition system is different, the FI system is different, the electrical system is different, the exhaust system is different, the cooling system, all the ancillaries, etc...
This will end up being a very big project (just locating all the additional 328 parts will be difficult), and will cost a good deal of money. I would strongly discourage this as you really won't get much bang for your buck. Spend your money on having a good shop rebuild and pep up your 308 system instead. I think you'll be glad you did.
PS If that particular 328 engine you've sourced is coming from California, and is out of 328 Mondial, I know that engine... and it is highly questionable - be careful. |
Frank
| | Posted on Sunday, January 21, 2001 - 5:57 am: | |
There are some reasons why i want to replace the
engine by a 328. The increasing of power is one thing.
Actually it seems, that my engine need to renew the head gasket because there are running problems
similar to these of Dirks QV in the discussion
group.
I think to renew the head gasket is an engine of job.
When this is necessary i can also replace the
engine.
Another reason is, that i have heard, that the
328 engines are the most reliable.
On the other hand i can get these 5K engine for
$5000, complete with gearbox and transaxle unit.
So i can have a near new gearbox and a little
bit more power and maybe i have solved the running
problem |
'75 308 GT4 (Peter)
| | Posted on Sunday, January 21, 2001 - 1:16 am: | |
Frank, why would you replace your motor? Did something go terribly wrong? If so, you figure that if you're going to replace the motor, why not "step-up" to something a little more powerful, right? For all intents and purposes, yes a 328 motor should bolt in to a 308 chassis, but this is not the way to go if you're replacing just as a means to gain more power. FI, distributorless ignition, port-flowing, all of these are the methods to increase performance of the stock motor. I'm guessing that if you know the mileage of the 328 motor (5000), this motor is available and pretty cheap, right? We need to have some reasons why you're considering this change. |
David Prall
| | Posted on Saturday, January 20, 2001 - 10:40 pm: | |
Ditto -- a good used 328 engine/transaxle (you'll need both, by the way) will run around $10 grand. For $2-3K you can modify your 308 motor to make as good or better performance than a stock 328. I've gotten several 308's up to a reliable 250-290HP with straightforward ignition, FI, and exhaust changes. |
Christiank (Christiank)
| | Posted on Friday, January 19, 2001 - 9:52 am: | |
If you are looking for more performance this is NOT the way to go. First make sure that your engine is tuned to the optimum (ignition, fuel injection, K&N filter, exhaust). Or talk to Nick (info in links to your left) for engine overhaul and/or performance. |
Frank
| | Posted on Friday, January 19, 2001 - 5:47 am: | |
Is it a good idea to replace a 308QV
engine (36000mls) by a 328 engine (5000mls),
if i can purchase such one ? |
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