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2.8 Carb Intake On A 4.0???


Isn't the 4.0 block taller, keeping the 2.9 distributor from reaching far enough in?
 
I believe (and I may be wrong) that the 2.9 and 4.0 height of the block at the distributor mount is the same... problem being, #1... does the camshaft have the correct number of teeth and #2... is the oil pump drive the same (hex shaft)?
As for the Manifold interfering with the distributor... if you read back, this was originally about making a 4.0 a carbed motor... no FE manifold would be in the way.
 
The 2.8 distributor does not rotate the opposite way of the 2.9, they both rotate the same way. The difference is in the distributor gear and cam drive gear, they are mirror images of the 2.9 setup, effectively make the reverse-turning cam turn the distributor the right way.

The problem is a TFI cam gear wont go on a duraspark distributor, its too big, and you would also have to change the oil pump driveshaft out because it has a different pattern.

You could fit a 2.9 or 4.0 block with a duraspark oil-pump DS and sleeve the TFI cam gear to get it to work.

Some people have modified a 2.6L intake to fit a 2.9 (even port layout) by altering the water passages, but it wont work on a 4.0 due to the higher deck height.

What it comes down to, and I have expirienced this first hand, is why convert a 2.9 over to carb when you can just modify a 2.8??? Its a waste of time. As far as the 4.0 goes, there just aint enough demand out there for a carb intake for it, and it would be of no benefit to anything, fuel injection is just simply better. EFI is not nearly as complicated as it looks....
 
I thought the 2.8L/2.9L distributor direction was clockwise and the firing order was 1-4-2-5-3-6?

Pete

Edit:
FWIW, I thought for a long time too until I seen that it was the same elsewhere. The cam does indeed spin backwards in the 2.8L due to the direct gear drive. It think it would be a fun engine to build up performance wise if the aftermarket was better. :)
 
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Warning to both of you - if you want to discuss this in an adult manner, then go for it. The name calling and childish bickering stops here. I'm leaving the thread open for now because figuring out the facts is always worth pursuing. If the level of dialogue doesn't improve, however, then the thread will be closed and the offenders dealt with as necessary.

Note: The majority of flaming was removed that fastpakr was referring to. ~ Jim Oaks
 
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EDIT: I believe the author of said book was Scott Prewitt (sp)

Sven Pruett. Apparently you can get them used from Amazon. I actually have one and bought brand new from New Zeland. Couldn't find one in the states at the time about 4 or 5 years ago. It's mainly based on the 2.8L engine as far as the build up, but covers stuff on the 2.9L and 4.0L. Good book, but a lot of the info on parts numbers and companies are out dated or non-existent.

Pete
 
Buy the book on performance build of the 2.6... 2.8... 2.9.. and 4.0. You will see they the last three are designed form the 2.6... and that, the 2.6.. was originally designed from an Assex V4.

Oh.. and as far as the cam and distributor gear being a mirror image, they have to be. the distributor gear is designed to rotate in such a way that it doesn't push up on the distributor shaft. if it was pushing up, big problems would arise.

EDIT: I believe the author of said book was Scott Prewitt (sp)

Dude, I dont have to go buy a book, I know it first hand. Ive taken the Carbed 2.9 idea further than probably anybody on this site, right down to making a DuraSpark distributor for the 2.9 out of a 2.8 one. The "pushing up" of the distributor has nothing to do with which way the gears mesh, and everything to do with which side of the cam the distributor is on. Now unless the distributor is on the opposite side of the cam from the 2.9 (which I dont believe it is, though its been awhile...) the opposite mesh of the distributor gear is going to turn it the same way.
 
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I reviewed this thread and cleaned it up. There were some posts that fastpakr read that were set to invisible (soft delete) that I did not initially see. Some of the BS flaming was completely removed and a few replies just had the flames taken out of them.

Flaming is a violation of our forum rules and the moderators can ban you for it. Especially if you're not going to comply with their warnings. The moderators asked that you try to conduct yourselves in a more civil manner in lieu of being banned. I would recommend that you do so and keep the thread productive for the OP. If people can't get help without it turning in to a flame war, they'll go post their questions on another forum.
 
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http://www.moranav6racing.com/category.html?CategoryID=32

look at the 7th item down. direct conversion to 4bbl. Not sure on ignition, but morana must nkow if he runs motors with this setup.


Well I just gave the guy a call and he told me that with his adapter that you still cant run a dizzy. He told me that a few people are using the stock ignition set up without any of the injection stuff. I would assume that they have a custom ecu to make it work correctly but he said that it DOES work (but he also said he has never done it himself:icon_confused:) He also said you can use a dizzy out of a 2.9, he said hes seen it done and it works. He told me that theres not enough demand to make a kit for it and thats why he only sales pieces of whats needed.
 
guy doesn't even run his own s**t, whats up with that? Like a bud light guy drinkin a coors or something. They probably power their idiot lights with the injector pulses cause they just don't care.
 
guy doesn't even run his own s**t, whats up with that? Like a bud light guy drinkin a coors or something. They probably power their idiot lights with the injector pulses cause they just don't care.

He said someone asked him to make it, and it sounded like he probably wouldnt have unless they asked. I doubt he has sold very many, so why put time into something that there isnt a market for?
 
Everybody. It's that 15-year check-in. LOL. I'm just really curious whatever happened with this guy's build? I looked on The Morena racing site that you guys linked to, apparently there are kits now but they're ridiculously priced at two grand for carb conversion. I just found this now while doing research on my own. I have a chance to buy an 87 Ranger with a blown 2.9 engine in it, and I I have a local person wanting to give me a 4.0 sohc engine and 5-speed transmission for free. So I thought about turning it into a car engine so I could slap it in there. But two grand is way too much.

Anyway what's going on?
 

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