Here's a couple pics as a teaser. These are the headers Mark made for the car and the cam blanks he turned and gun drilled at home to be sent to the cam grinder.
The stock TR cams were going to be spinning the wrong direction so Mark had to make new ones. He's doing most of the work himself to keep the cost down. To reduce the cost on the new cams he bought the raw stock and gun drilled the centers at home and cut the blanks to what you see in the pics. He then picked a profile and sent the blanks to a cam grinder that will grind and heat treat the finished cams
The stock TR cams were going to be spinning the wrong direction so Mark had to make new ones. He's doing most of the work himself to keep the cost down. To reduce the cost on the new cams he bought the raw stock and gun drilled the centers at home and cut the blanks to what you see in the pics. He then picked a profile and sent the blanks to a cam grinder that will grind and heat treat the finished cams
It wasn’t a spinning the wrong way issue….it was the wrong firing order. There are basically 2 ways you can do a 2, the 400 is one and the TR the other so the TR cams won’t work with a 400 crank. Had I bothered to do any research and planning BEFORE starting the project I most likely wouldn’t have started
Here’s the drilling, machining in progress, the finished cams, profile comparisons and expected output. The lobes are big..so big the intakes hit the bucket bores, that will need to be fixed.
The welding in the pics you posted was to fill in the original head studs holes because the TR heads had a different bolt pattern...that was another one of those things were had I really thought about it I would have cancelled the project.
Then as long as I had to remachine the block anyway I decided to conver it from the 400 and earlier style sleeve that the head compresses against the bottom of the waterjacket to the ater style that clamps the sleeve to the deck becasue they are a lot lighter and the bore stays rounder.....but I had to add a flange. What's a little more welding anyway
I'm still working on the air box. I finished welding the inset plate in, milled the ribs and cleaned it up a little bit. I don't have anything that will sand inbetween the ribs very well.....I'll have to find something.
WOW !!! Is that "Jason" on the loose ??? Seriously, just incredible to know what you are doing. Thanx for posting such great pics Mark. w/ smiles Jimmy
I didn’t like the 400 engine for 2 reasons. First it is a 2 valve and my car is a QV and putting a 2V engine in a QV car just seemed wrong. Second the intakes for the 400 go through the middle of the head which limits flow and limits intake options….the 400 is limited to about 450hp in naturally aspirated trim I think.
I didn’t like the TR engine because it would need to go in with the TR trans which has diff issues and means I would lose the trunk.
The 400/TR hybrid should would better than either of the donors. Last on the list is my car is an ’84 and both 400 and TR engines were available in 1984 so my hybrid engine is period correct.
Yup: I agree. Most owners haven't seen their engine open let alone working the Ferrari nibble-bites-n-bits. He's an owner in my book.
MK_E how about this for the grooves .. knowing your sawzall capabilities, you would make this work using squirels in a treadmill for power and a used roll of Duct Tape you take confidence to a new level. Can't wait.
What kind of modifications are you going to have to make to the hood/bonnet to have it close? From post #12 it looks like there will need to be some changes made or am I missing something?
What kind of modifications are you going to have to make to the hood/bonnet to have it close? From post #12 it looks like there will need to be some changes made or am I missing something?
Hopefully none, the deck lid sits higher than it appears. I have just over 3” from the tops of the TBs to the bottom of the deck lid and I’m trying to stay within that space.
Space seems good. How about air? Need to open, under the lid area a bit? 12's not only need lots of cooling but breathing. That radiator is going to be special.
I'm going to go withthe radiator I have from the supercharged engine and see how it goes...it's pretty big and I never had even a hint of a problem with the 550hp engine.
The air inlets are next up and were this morning's work....which was really mostly just looking at parts and thinking a bit. There is going to be a 4" or 5" hose feeding each end of the air box. I want the top to keep its shape and definition so the blends to the hose connections will be biased to the bottom as much as possible.
The top of the airbox will be removable because I will be using show injectors mounted inside the airbox. I was thinking I wanted the air hoses attached to the bottom plate to make the top removal easy….as I could pop it off to show off my 12 massive throttle bodies , but that will make sealing the top a bit of a challenge I think…..I need to give this some more thought.
The air hoses will go the a pair of air filter boxes mounted behind the engine with hoses running up to the body air inlets. I’m trying to make the install appear stock so I’m thinking I’m going to try to use a pair of OEM CIS air filter boxes or at least the covers from them…..we’ll see.
Quick disconnectors for the air will be a challenge...might want to go outside the 'industry' and look elsewhere....thinking water as in pumps [Calling PETE ...perhaps the oil industry can help]
I need to give it some thought. I really want the hoses attached to the bottom section of the air box so the top can be popped off without needot to mess with the hoses.
I figured I'd move on to something else and ponder the air hoses.....of course I was figuring I was movign on to something else on the car....Lana was figuring I was moving on to re-covering "her" kitchen chairs that "my" son ruined.
Once Lana's chairs are done I'm going to finish up balancing the rods so the internals can all go to the balance shop. Then I want to convert the block to the common 365 main bearing instead of the srewball 400 mains which will mean the line bore needs to be re-done. Then we;ll see.....I;m thinking cylinder liners.
Hi Mark,
Just poking my big nose in to say hi.
Glad to see you are staying busy and making progress.
I will also be checking the "OpenECU" link as well.
Carry on!
Has this ever been done before? Shoehorning a V12 into a 308? As the former owner of two 308s (1982 GTSi and 1983 GTSi QV), I like the concept a lot! Congrats on having the patience, creativity...and balls.
I love some of the photos - looking down the long block of a V12 is an awesome view. Good pictures.
Keep us tuned in guys on the progress of this open heart surgery.
I've been lurking here for quite some time now... finally have something to talk about!
Look at it this way Chris, you only have 949 posts until you can be number 1000!!!
Rick
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