Explorer parts and questions

[LtMercDaddy]

I just picked up a upper and lower intake manifold off a 97 mountaineer. the intakes have the egr provision. I also nabbed the injectors. I noticed that they are the 4 port spray nozzle.

I couldnt grab the heads as the exhaust manifold bolts were stubborn bitches and also the fact that the front bumper was where the water pump was. making removal of the accessory brackets impossible.

i got 2 questions. can the 4 port injectors from the mountaineer be used in a ho conversion using the foxbody ECM's? or they useless without the mountianeer ecm?

2ndly. since i have the intakes and they are equipped with the internal egr provision will they work with some worked over e7's? egr and all? or is there aftermarket i should look into that would be a better match to the intakes ablity? unless i can find a pre 98 set of GT-40's im going to have to use e'7s or something aftermarket.

[89LincolnTWNcar]

Since the intakes have the internal EGR, they will work fine with E7 heads, fox EEC, and EGR. I am installing some explorer intakes as well and all that needs modification is the intake air charge sensor, which will need to go in the intake tube.

[mrltd]

The injectors will work fine with a mustang HO ECU. As long as it's internal EGR it's the same as th current lopo (and fox HO egr) EGR setup.

[LtMercDaddy]

well since i can use these injectors in my swap i guess it might be a good idea to rebuild them. the mountianeer had 136k on it and it was obviously running untill it slammed into something.

now i know there is 2 o-rings on the top and bottom of the injector, there also seems to be a nylon or plastic seat at the bottom where it sets in the lower intake port. I know the o-rings are replaceable, are they different sizes? top? bottom? and is that seat looking thing replaceable? i noticed on one or two of teh injectors it looks to be curled a little. also anything else that can be done to these things to "so called rebuild them?" they all had residual gasoline in them when i removed them from the rail and intake. BTW i didnt get the fuel rail because it was kinked due to a impact with the firewall. would a fox rail work with these injectors?

[mrltd]

Hmm, can't you look at them to see if they are different sizes? You should be able to get the caps. Try a local autoparts store or the Ford dealer.

yes, they will work with a panther fuel rail. I ran a set in mine until I got the 24's.

[LtMercDaddy]

well since i passed up on the heads cuz they was gonna be a PITA to take off. ive been looking into both castings of the the non-p's and the p's. Apparently the p's have a smaller combustion chamber around 59-60cc's the non p's are around 64-65. both head castings, use the same size valve diam on both intake and exhaust. I havent found any info indicatating that the intake runners are any larger then the spec 148. giving that information others have been shaving the deck height down on the non-p heads to keep the compression up. with the p heads no milling is needed to keep up the CR. assuming that the deck heights would be close to the same with these 2 castings, running the non-p heads milled will decrease the VTP clearance causing issues if u were to run a high lift cam and 1.72's. running the P heads will require loss of EGR but require no milling, and assuming same VTP clearance capable of running high lift cam and 1.72's.

or

aftermarket iron castings, only new castings avalible are seeming to be the world products jr and sr. the jr carrys a 58cc chamber with a 180cc intake runner and the sr carrys a 64cc chamber with a 200cc chamber. Both have valves larger in diam then the stock gt-40s both p and non-p castings.

im going to assume that using the larger sr. would reduce the CR and with the large intake runners of 200cc would be excellent for a forced induction setup. Granted im not interrested in going the forced induction route. im looking for bang for the buck.

I think with the research I have done I will be scouting the market for a set of gt-40p heads. a set of 1.72rr and a E303cam or just a stock ho cam.

also if the deck height was different between the two castings then theroetically the pushrod length would be longer on the non-p head as opp to the p head.

[gadget73]

The P heads should have the passages in the head to allow internal EGR to function, so thats not really an issue. The intake you got has internal egr passages, and if it came from a 97 it was a P head motor. Not sure on the pushrod thing, but some of that is also dependant on the cam. I think mrltd has custom length pushrods on his non-P heads and aftermarket cam combo. I've assembled a motor with P heads, an HO cam, and whatever pushrods came from the Explorer engine, and the preload was fine on the lifters. I don't honestly know if the pushrods that came with the P head motor are different length than standard gt40 or e7 heads though.

What kind of cam are you looking to run, and what do you want to do with the car? A lot of that will determine the optimal head to go with. If you're looking for daily driver duty, a mild cam with better low end and heads with smaller runners are probably going to be a better match. GT40s, P's, ported E7s will do fine, or you could delve into the aftermarket if you can get a good price on something. Also there reaches a point where that Explorer intake becomes a bottleneck, and its not as far out as you might think. My ported E7 heads can flow on the intake side even with an Explorer or HO cam more than my Explorer lower can do. Maybe someday I'll get around to replacing it with a ported lower, it should be an interesting power upgrade.

There are also better cam options than the old letter cams, so you may want to check around for other options. Remember your car is a fair bit heavier than a Mustang, combined with the extra losses in an AOD vs a manual, you'll want more low end power. The top end is somewhat less important. Explorer cams and HO cams will do well if you're looking to build a mild motor, but there are more agressive options that will also be a good match. I'm definitely not a walking cam index though, so I'm not going to claim to have any specific suggestions.

[mrltd]

Uh, have you read anything about the 2 non-p explorer head motors?

That's what I'm running in my car and saying it runs good is an understatement. And superlinc isn't exactly a slouch either.

The compression isn't THAT low and milling the non-p heads .030" will give it the same specs as a 93-95 Mustang cobras. The P heads are the PITA because of the different spark plug angles.

[LtMercDaddy]

Uh, have you read anything about the 2 non-p explorer head motors?

That's what I'm running in my car and saying it runs good is an understatement. And superlinc isn't exactly a slouch either.

The compression isn't THAT low and milling the non-p heads .030" will give it the same specs as a 93-95 Mustang cobras. The P heads are the PITA because of the different spark plug angles.

Yeah I have been searchin forums and web docs looking for specs on the various castings of heads, the E6's E7's and the GT's and the GTP's. obviously the E7's are better then the E6's and the GT's and GTP's are better then the E7's.

I'm just trying to find out if the deck height is the same between the GT's and the GTP's. I know u can mill the GT's down to get a higher CR. that would also require custom length pushrods. if the deck heights are the same before milling and only the Combustin chambers are larger then PTV clearence will be sacrficed and high lift cams or increased ratio rockers may not be possible. yeah i know they say that special aftermarket headers must be used but ehh what the hell. as for tuning due to whatever happens. it will be maid way of MAF converted system using the tweecer tuning software.

BTW did u mill ur heads?

[mrltd]

read some more....If you do not mill the gt40's you will need longer pushrods. Milled Gt40's should work fine with stock pushrods.

I did NOT mill mine. Nice low compression 5.0. Custom pushrods, .512 lift cam. Anyway, 1.7 rockers and a huge lift cam are not what you need for a car like this. You will still have a ton of PV clearance with a little milled off.

[LtMercDaddy]

read some more....If you do not mill the gt40's you will need longer pushrods. Milled Gt40's should work fine with stock pushrods.

I did NOT mill mine. Nice low compression 5.0. Custom pushrods, .512 lift cam. Anyway, 1.7 rockers and a huge lift cam are not what you need for a car like this. You will still have a ton of PV clearance with a little milled off.

thats the info i was looking for. I couldnt find specs on the deck height. obviously the GT's are just taller. I found everything but... I was assuming that the decks were the same height before milling and after milling would require shorter PR's but is the opposite.

[DuceAnAHalf]

the 200cc numbers are in reference to the volume of the intake runner, it has no effect on compression ratio. I just saw in 5.0 and Super Ford that Dart has a new set of Iron heads out with either 200 or 235cc :wow: intake runners

[Mercracer]

well since i passed up on the heads cuz they was gonna be a PITA to take off. ive been looking into both castings of the the non-p's and the p's. Apparently the p's have a smaller combustion chamber around 59-60cc's the non p's are around 64-65. both head castings, use the same size valve diam on both intake and exhaust.

The P heads use a smaller exhaust valve and a smaller exhaust port exit than do the GT heads.