F40 Engine Rebuild - Don't try this at home!

"Only someome who has done this before will know the correct amount of heat to use."

Was he heating it with a torch?

I cannot see why it was not heated as a whole unit.

Are they pressed in at all?

 

wow, seeing that engine apart is pretty cool, sorry for your troubles though.
If you don't mind red-riot,what's the ballpark estimate on the costs of the work, I'ld like to get an F40 someday, but I'm conserned about maintaince and repair cost, that's why I'm cautious of an 512TR I'ld like to have.
Ferrari = Trouble Turbo (other than Prosche and Mercedes)= Trouble
Ferrari+Turbo=BOOM
Also, some of guys here are alittle too conserned about this. Taking an engine apart and rebuilding it isn't hard. You just have to go slow, be careful, take your time, and follow ALL instruction. Now scoring, grinding, and adjustments are more experience oreated. The thing that makes Ferrari engines special is the development of them and the materials used, other than that it's pretty simple.


Good luck red-roit.

 

Liners go from washing the oil away, typically with too much gasolene.

Easy to do in a turbo motor if EVERYTHING is not right. Check injectors of course.


Actually looks relatively simple to rebuild to me. Nothing in there more complicated than a 308. I do wonder why the block wasn't evenly heated in an oven? Torching the side seems like it would be an easy to warp a block.

 

Rob,

While you are right on the money about revving an engine before correct operation temp ... I don't think that is what caused this problem (you would more than likely get rod or crank bearing issues), but I guess only the owner would know

I like the fouling plugs leading to too much fuel in those cylinders theory. Petrol is really abrasive and the owner indicated that it has been running poorly ... makes sense.

Pete

 

Well, in the turbo cars I've owned, the manuals always talk about the "warming the engine/cooling the engine" cycle that is needed for the turbos. Not doing so leads to "coking up" of the various parts of the engine (usually of the turbo) which will would neccesitate an engine rebuild.

I would be curious to see what Ferrari has to say about this in the manual, if anything at all....

 

Cooking the Turbos would mean rebuilding the turbos. Not the engine. The turbo is a separate unit from the engine and unless you had a catastrophic failure, exploding turbo sending impeller shrapnel into the engine- or impeller play causing it to contact the housing and sending aluminum shards into the intercooler and engine, a bad turbo won't cause this kind of failure. Even if you did have a failure noted above you'd find heavy scoring from the debris in the combustion chamber. These turbos aren't anything special (these days). They could be rebuilt by any competent turbo shop for about $500 each.

I'm going for the poor internals and/or poor fuel delivery as the problem.

I forgot to say it in my previous post but send out your injectors and have them rebuilt. It's very inexpensive. That will include having them flow tested before and after the rebuild. You're spending a LOT of money having this rebuild. I'd be a shame if you pop a couple of bad injectors back in and have to do it all over again.

 

There's a difference between cooking the turbos, and COKING resulting from the turbos.

 

Yes I would agree! But, over time one usually leads to the other.

 

Maybe this is a result from babying the engine too much and not giving it enough whellie ... ie. puttering around going to concours shows?

Pete

 

Evilfij was right about heating the block. I have seen many "pros" use the torch. Bad and lazy IMO. I hate to be a wet rag on this but if this is the way WWOC is doing my F40 I would have someone else do it. This is why Ferraris have reputations of mechanical nightmares. If I am doing a home garage rebuild the torch and ice chest is fine. I am interested in more pictures to see the rest of the rebuild. I am scared to see what they do next. I am sure you will get another 10,000miles on this rebuild but this is no racecar driven at race level and the engine should last a long time like 100,000 at least. Lets not talk about what turbos do yes ...yess...more stress but they are not that big a deal. Mome modified turbo cars and Nitrous oxide injected home builts go more miles that 10,000. Been there done that. Proper Ferrari rebuild include heating the block as one unit in an oven without the studs in place (that is micky mouse!). Studs in place means WWOC has no intension of making sure the deck is flat before the heads are re-bolted. Also uniform cooling of the liners is indicated in a freezer not a dryice icechest. I hope that they actually use the special tool to make sure they hone the crank bores, square the liners to the crank, hone the cam bores, check crank and cams for true. Did they check the valve seats/guides...not if they did not take them out of the block. Eyeballing is fine for a short life engine but hey you are a rich Ferrari F40 owner right? A rebuild every 10,000miles is 2-3 years of driving so what the heck. What do I know I'm not a mechanic...I am a cynic with a bad attitude...I'm Sorry. I hope everything works out for your F40.

 

I agree. I do not think this failure is caused by the turbos in any way.

 

I have to laugh when I read this.....

You can't take the noise of "drop gears" and you really own a F40?

I have drop gears in my F40 and they make the most BEAUTIFUL whine to go along with the symphony of noices from this car.... removing the drop gears is like removing the brass section from the orchestra!

Next you will be telling us you actually run mufflers on your F40 and you have a STEREO installed!

You know I am just kidding, you have to admit nothing is louder than a F40, so a bit of gear whine is just icing on the cake!

I hope you upgraded the Turbo's, it makes a difference.... I upgraded mine and the car is more responsive.

uh, I hate to mention this, but the valve covers should not be shiny....

 

Yes, they should be wrinkle finish, flat red... In order to re-finish these correctly they need to be removed, stripped, painted with wrinkle paint and heated or baked for the correct wrinkle finish. It is certainly not correct now and the dealer should know this. The re-finish, since it was done incorrectly, should be on his nickel.

I run with test pipes and either a Tubi muffler (not my favorite) or a Tubi Comp system (straight pipes, my favorite).

Thank you for posting this, I have enjoyed it. I wonder if Carobu could make you drop gears that are not straight cut, I think you will miss the performance...

 

Are they THAT LOUD?

What performance differences did you notice with this gear set?

By the way I require the following information about F40 Engines:

Center to Center of Connectng Rod (crank to wrist pin
Center of Wrist Pin to Top of Piston
Center of crankshaft bearing to top of cylinder block

Thanks.

 

parrf40, out of curiosity what upgrade did you make to your turbos? Intake impeller wheel? Exhaust wheel? What size, degree, and or clip? And what kind of performance change did you get? I.E. quicker spool, smoother transition to boost, no power drop toward redline, or just more power?

 

I upgraded to LM turbo's.... sorry I do not know the specs, I do know we added about 35hp, but you have to use Carobu Computer Chips along with the turbo's to make that happen, I believe chips and turbo's are about $7,500.00.

 

I hate to mention this but they are cam covers. And your car is not a syphony, it's "obnoxious", remember!

 

You engineers are so technical! and yes they are CAM covers....

I just took the MUFFLERS off the F40 today, put the straight pipes back on, so yes, it is obnoxious once again!

I will be in New Orleans later this week with the F40.... LOUD and PROUD!

 

Once they get dusty, they'll be just right!! LOL!

 

So, where can you/he get the proper paint for the CAM covers? And don't say the Ferrari dealer. I know there must be some place else. This forum is all about solutions to problems. Right? Not just pointing out stuff that might be wrong. Although that is fun.