Are all intakes created equal

I bought a buick 225 dauntless intake for my 67 jeepster put it on and it doesn't cover the ports in the middle of the head. Are there different intakes for the 225? The engine in my jeep is a original motor and the older intake which was drilled into by the previous owner for reasons unknown, looks to have a straight edge with more metal than does this one I bought. The one I purchased off this site in the classifieds has the contour edges of the ports. Hope this makes sense, it's hard to discribe?

 

Parts manual shows two manifolds, one with emissions and one without. Judging from the looks of the black one its with, meaning it has a port that runs from one side of the manifold to the other to heat the intake, that's what that hole is between the studs. I don't know if there's any sixes here with the intakes off I can check out tomorrow but I'll have a look see.

 

Thanks for your reply. Older Jeep/Buick parts are harder to come by than an O. J. alibi around here. Really wish I'd bought a manual or found this websites posts and asked before I blew my budget on a part I can't use. Oh well, live and learn...

 

You *might* still be able to use it. Depends on that open gap showing in the picture whether it goes into the exhaust port on the head. Something tells me it doesn't, course I've been wrong a couple of times before. I'll see what I can find out for you. I'm staying at a friends place in NC and there's at least 10 V6's around here of all years so there should be a couple with the intakes off I can look at.

 

Of all the Jeepsters around here this is the only one I could find with the intake off and it happens to have the exhaust crossover. Could not find an early six. Any chance you could get a picture of your head with the intake and gasket removed?

 

Pretty sure the exhaust crossover exists in all the 225 V6s. It's used to heat up the intake manifold during cold starts - there should be a valve (flapper) on one side between the exhaust manifold and pipe that blocks the pipe when cold. This forces exhaust through the passage into the other manifold, and heats the intake manifold. Heating the intake keeps fuel from condensing on the inside of the manifold and helps drivability when cold.

The only difference between the two manifolds will be whether the platform for the EGR valve is present - if so it will open to the passage.

Though I can't tell them apart, I'd guess your engine is really a 231, or the manifold is for a 231. Look at your casting numbers and compare them to the list in the tech sections here. http://www.earlycj5.com/tech/engines/225/castingNumbers.php

The Jeepster and CJ 225s are the same - you'll get more exposure if you post your question in the Early CJ tech forum.

 

It looks like from the first pic the manifold shown is a 231. It has the PCV valve grommet in the flat area in the back of the manifold in the valley area. AFAIK, and someone enlighten me if not correct, most if not all 225's had the pcv valve in the valve cover, not in the back of the manifold. All the 225's I've seen were this way. Nickmil

 

I believe that to be correct Nick.

 

Jeepster never used an EGR valve. I'd like to see a whole picture of the old intake, it's certainly different than any 225 on any Jeepster around here. It's possible that your engine is an early 231 oddfire. Jeepster didn't have a heater hose outlet on the front of the intake or the PCV grommet in the intake as was mentioned.

 

no 225 used an EGR valve
intake manifolds not equipped for one

 

And just to blow my "they didn't have the heater hose outlet at the front" theory, I just looked at two that do , both had/have A/C. But I have not seen one with that curved outlet on the front.

 

I dusted off a manual and did some checking through the casting numbers section on here and only found the casting numbers for the 225 intake. Anyway, the casting numbers off my old intake is B-126220 4-A, I noticed a lot of the 231 casting numbers starting with 126 also. This certainly would explain why I wasn't able to get a valleypan gasket like the old one I took off, because I was asking for a 225. I guess I should ask for a 231 instead.
Guess, buyer beware, don't believe everything a seller tells you. It was sold to me and explained it had been in the family since the early seventies and was all original and a fresh rebuild. Not so if it's a 231. But it did run pretty well for having an exhaust leak and once I get this worked out it's not that bad. I do love the old thing, and with fall here, look forward to some family drives! Thanks for everyones help on here, yall are awfully nice around here.

 

The blocked EGR port on the rear would definitely make it an early 231. If you can find the right intake and it runs well that's all that really matters. Horsepower and torque are actually less than the 225 but hey, as long as it starts runs and drives what more could you ask for .

 

My feelings exactly! I'll keep my eye's out in the classifieds on here for a sweet deal on an intake. Who knows maybe I'll find someone wanting to swap for this nice 225 I have no use for now.R)
Thanks to you and the great folks on here I at least know what I'm looking for though.
Take care

 

Mystery solved, I found some time to tinker with the beast today. When I took the valve cover off it was as if I was opening the treasure of Black Beard, I could hardley wait to scribble the numbers down and get on here to see what motor I had once and for all. Well turns out it's a 1975 231 V6, Odd-Fire. I bought it from a lady whom received it from her late fathers estate so he may not have let her know the transplant had taken place. She told me it had been in the family since the early seventies and whether she knew or not, it just goes to show buyer beware when your buying a vehicle sight unseen off the web. Not the first time I've been through this and maybe it won't be the last but all and all I'm happy with the little red trail buggy anyway. The motor seems to be very clean and with low miles judging by the wear on the inside of the motor. It was amazing the little differences I found between the intakes for a 225 and 231. They definetly won't interchange perfectly, just enough to make you scratch your head, and dig to find out what sort of motor you really have. The one I most feal sorry for is John the fella at O'Reillys who I promised I had a 225 and couldn't understand whythe gaskets weren't the same. He was as happy as me to see the "vally pan gasket" arrive when I told him the correct motor CID. Think I'll have to bring him a Sonic burger by one day to make up for his trouble. Wish I could do the same for ya'll, thanks again! I'll be sure to update this with a pick when I finish.

 

Glad ya got it figured out... Nickmil