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93 LX D15B7 Headgasket help needed-information overload!

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Old 07-29-2014, 07:21 AM
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Default 93 LX D15B7 Headgasket help needed-information overload!

Guys, my head is spinning. So much info on mini me swaps that I'm having trouble understanding and finding info on a plain hg change. The work isn't hard to do, but I just need to double check part numbers. I'm buying from Majestic Honda.

Need 10 head bolts: p/n 90005-PM3-003
Hg from a 96 EX: p/n 12251-P2J-004
Exhaust mani gasket: p/n 18115-P00-004
Intake mani gasket: p/n 17105-P00-T01 or T03-----which one do I need? Same price, but different part numbers?

The head gasket is from a 96 2dr EX VTEC. Is that the one I need? I'm planning on lifting everything out all still bolted together. The machine shop said they can check to see if its in spec with the exhaust and intake still attached and then if it needs milled they can mill it with the only the exhaust taken off. If this is the case, should I go ahead and replace the intake gasket while its out or just leave it alone? I'm going to go ahead a buy it just in case it doesn't work out like I plan and I have to take the intake off as well. Timing belt, water pump, etc were all done 10k miles ago. Any help is appreciated. Thanks all.
Old 07-29-2014, 07:56 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

Sorry to point out the obvious here but at least this question should answer one of your questions, "Is your car a 96 2dr EX VTEC?"

Now it is common practice to mix/match parts from different years to acheive something other than stock so if that's your intent then go for it but it sounds like you're only trying to replace your head gasket. Enter in your info properly on Majestic and order away.

Also I'd like to ask is there a specific reason why you are replacing your headgasket?
Old 07-29-2014, 08:36 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

Originally Posted by 24TEN
Sorry to point out the obvious here but at least this question should answer one of your questions, "Is your car a 96 2dr EX VTEC?"

No, it's not, it's a 93 LX. However everything I've read reports that the oem Honda gasket for the 92-95 15DB7 engine is a weak gasket due to it not being an MLS gasket and the valve issue with these engines. Honda put out a bulletin about it and upgraded the hg later on. It seems common to replace it with the hg from a D16Y8 motor, which is the 96-2000 EX. I wanted to make sure this was the correct part number. I believe it to be. Honda does make an upgraded OEM gasket, but Majestic doesn't sell it and the dealer wants $100 compared to $30 at Majestic for the 96 EX head gasket.
Now it is common practice to mix/match parts from different years to acheive something other than stock so if that's your intent then go for it but it sounds like you're only trying to replace your head gasket. Enter in your info properly on Majestic and order away.

Also I'd like to ask is there a specific reason why you are replacing your headgasket?

Specifically, it burns coolant, white smoke from exhaust, drive able but if I go more than about 50 miles without topping off coolant it will overheat. It has coolant in the oil and oil in the coolant. There are products of combustion in the radiator air space. I'm assuming its a slow leak between two and three cylinders. All compression tested fine, equal across all cylinders. I was unable to do a leak down test with my equipment on hand.
Old 07-29-2014, 08:51 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

pull the head, remove both manifolds AND the cam. take it to your machine shop of choice and have it checked for warpage and pressure tested. order the correct gasket for your car. there is nothing wrong with the graphite gaskets any more, and they seal slight imperfections better than the mls gaskets. mls gaskets still blow, ive replaced my share. you do not need to replace your head bolts, either. i have never done it, and havent had any issues. typically, i add a third step in the re torque sequence of 5 ftlbs over.
Old 07-29-2014, 09:40 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

And if you are concerned about the graphite gasket you can do the leak replacement gasket for the D15B7/8 which is recommended after the head gasket leaks anyway, and I believe it is a 4 layer MLS so it keeps closer to the stock compression ratio.

In that case they do want a different set of head bolts.

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Old 07-29-2014, 10:32 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

If you really want new bolts I recommend APR head studs instead. They're a little tiny bit more complicated to use but they're undeniably better, if they're good enough for racecar they're more than good enough for your daily driver.

I was gonna comment about the after-leak gasket but tomcat beat me to it.
Old 07-29-2014, 10:36 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

I don't need more than good enough, I just need good enough. This car gets driven 50 miles on the highway, shut off for 24 hours, then driven 50 miles back home and shut off for 48 hours. I don't need high end, I need reliable enough.

Is the after leak gasket worth it for the price differential?
Old 07-29-2014, 10:59 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

Originally Posted by TomCat39
And if you are concerned about the graphite gasket you can do the leak replacement gasket for the D15B7/8...
Exactly where I was headed with my question

OP: We are actually in the same boat. I ordered the upgraded gasket through Majestic myself a few months ago, just type in the part number from that attachment provided by "TomCat39" and it should come up. If you wanna roll the dice with the Y8 gasket, make sure the head is resurfaced first. If possible have the block mating surface measured for straightness too. If the engine was never overheated the Y8 gasket may be a valid fix.
Old 07-29-2014, 11:24 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

Originally Posted by 24TEN
Exactly where I was headed with my question

OP: We are actually in the same boat. I ordered the upgraded gasket through Majestic myself a few months ago, just type in the part number from that attachment provided by "TomCat39" and it should come up. If you wanna roll the dice with the Y8 gasket, make sure the head is resurfaced first. If possible have the block mating surface measured for straightness too. If the engine was never overheated the Y8 gasket may be a valid fix.
Haha. I actually decided for $40 difference on the gasket and $20 difference on the bolts that doing it once and doing it right was probably worth it. The parts are already in my Majestic cart.

Any ideas on the intake manifold gaskets? There are two part numbers for the same part?
Old 07-29-2014, 11:32 AM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

Willing to bet it's more or less a revision number. I think you're safe using either since it lists both. If I'm right about it being a revision then I'd lean on the T03.
Old 07-29-2014, 12:04 PM
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Default Re: 93 LX D15B7 Headgasket help needed-information overload!

Originally Posted by Brian.Evans
Any ideas on the intake manifold gaskets? There are two part numbers for the same part?
As can be seen at HondaPartsNow.com

T03 replaced T01.

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