7.3idi turbo vs 7.3idi

[Stuka]

Hello everyone, I’m going to build a 73 IDI from the bear block up. I’ve been doing a bunch of research and I’ve read through all of the Ford manuals. On the differences between 7.3 IDI turbo. And 7.3idi. From what I have seen and read, there does not appear to be any differences in the castings of the block or head and the only components that really seem to be different are the Pistons valves and connecting rods as well as a few other small changes so from my understanding I can take a NA 7.3idi and purchase 7.3idi turbo parts put them on a 7.3idi na and will have two completely identical engines if I am mistaken, please correct me before I spend a bunch of money on parts
I will attach the primary document that I got this information from

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www.etotheipiplusone.net

 

[FrozenMerc]

You got it.

 

[IDIBRONCO]

I’m going to build a 73 IDI from the bear block up

That's going to be a growly engine when it's done!

 

[ifrythings]

You also need the turbo engine balancer and flywheel/flexplate as they are weighted differently than the NA engine.

 

[Nero]

Correct, if you use turbo rods, you must use turbo balancer and flex plate. I do not believe that rule applies if you use psd machined rods

 

[IDIBRONCO]

I do not believe that rule applies if you use psd machined rods

You'd probably have to ask Justin about that one.

 

[Sparks-IDI]

I'm restoring a 1994 IDIT extra cab dually right now. I have been researching about the IDIT engine over the past few months. In regard to Stukas original post, there does appear to be a block difference. I found this article from a website www.engine-builder.com. Probably unless your going for big power, any good clean straight 7.3 casting would work for you. I'm just pointing out what I have researched and found.

 

[IDIBRONCO]

If this is an article that says that the main bearing webs are thicker, it's not true. Someone on here measured them a few years back and they measured the same thicknesses. There's no real differences in the blocks that would affect strength/performance at all. Also, any mention of rods, pistons, etc. really don't mean anything since the question was about the blocks only.

 

[Nero]

I have a turbo block and a N/A block currrently, the only thing I saw different was the thread size for the oil pressure sending unit drilled at the back of the block. One was 1/8 NPT, one was 1/4 NPT. Past that, I didn't see any other differences between them.

 

[IDIBRONCO]

Wasn't it you who measured the main bearing webs for thickness?

 

[Nero]

It wasn't, but I could next time I move that boat anchor

 

[Sparks-IDI]

That's interesting. I was always under the impression that the turbo block was a bit beefier. I'm about to examine and reseal my IDIT engine as I am getting ready to install it back into my rebuilt/painted chassis. While I have the heads off (for studs), and oil pan, I'll give a look at the webs and see what I can measure up. Need to consult the guru Justin about this. I happen to follow his Facebook forum. If anyone knows for sure he does.

 

[Bulldozer]

Hello everyone, I’m going to build a 73 IDI from the bear block up. I’ve been doing a bunch of research and I’ve read through all of the Ford manuals. On the differences between 7.3 IDI turbo. And 7.3idi. From what I have seen and read, there does not appear to be any differences in the castings of the block or head and the only components that really seem to be different are the Pistons valves and connecting rods as well as a few other small changes so from my understanding I can take a NA 7.3idi and purchase 7.3idi turbo parts put them on a 7.3idi na and will have two completely identical engines if I am mistaken, please correct me before I spend a bunch of money on parts
I will attach the primary document that I got this information from

Loading…

www.etotheipiplusone.net

Wondering.....lol .....a Lil Late HERE .....my Engine did Great ......was A Remann .... mechanic showed Me Stamped RODs saying Rebuilt ....its a 93 Van so Turbo wasn't Available.....so Unknown to me If was a Remann NA or Turbo Motor ....Came To Understand Only a Couple Things... hearsay that they Have Bigger Crank n Rods n Pistons and then i Read HERE that Cranks Micrometer the Same Size ....Anyway there's a Remanned 7.3 na motor In Now With a Head Stud Upgrade for the new hp turbo pump n injectors...will get remanned turbo as Well ....used To Make Great power before a Shop 5 yrs ago started It With 100 percent Ether Pistons Slamming Off Head ..lost power 100,000 miles later Blowby Bad ..... thinking Rings Were Compromised during ether start ....1 Tough Engine....Anyway Hope I'm Not Gonna Learn More about Doing it Wrong ....live n Learn ....bust Knuckles n Learn ...spend Money On Wrong **** Learn . ..... Would be curious to know if what I've had done is okay.... Thanks for any other info you have..... Good luck with your build........ Other than a couple of minor hiccups so far my motor sounds so good..... At startup the other morning it was super good except for there was a power outage that felt like a air intrusion.... He found it and got it running but the rear main seal of the motor was leaking as my luck would have it.... That's my luck as well as a radiator...lol if you knew the backstory on that some more bad luck..... As in I'm trying to buy another one right now for my 73 IDI van and they're freaking expensive... Anyway love my van

 

[IDIBRONCO]

hearsay that they Have Bigger Crank n Rods n Pistons and then i Read HERE that Cranks Micrometer the Same Size

Turbo engine do have different rods and pistons. Bearing -wise, the Turbo and N/A cranks use the same bearings. The Turbo crank is balanced differently for the different, heavier rods and pistons. Yes, they should measure the same at the bearing surfaces.

 

[ihc1470]

Here are the changes made for the turbo.