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Old 04-26-2013, 02:01 AM   #1
eugeneutopia
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Default What should I do while I'm having my pistons replaced?

Unfortunately for me, my '10 FXT has lost compression in at least 2 of it's cylinders. My tuner is going to replace the pistons with JE EJ257 pistons and KS Tech air pump delete plates.

My question is this: While the tuner has the engine torn down, what else do you think I should have done? Short of using thinner gaskets to increase compression, I don't have any experience with this kind of thing.

Any thoughts are appreciated!
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Last edited by eugeneutopia; 04-27-2013 at 12:04 AM.
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Old 04-26-2013, 03:45 AM   #2
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Internal or external? I would at least do some Grimmspeed phenolic spacers, motor mounts, and pitchstop. Sti crank. Perhaps a new inlet. What else can you afford? Forged rods? Cams and valvetrain upgrades? Port and polish? Killer bee oil pickup? Light weight fly wheel? Better clutch? More cowbell? More importantly, what does your tuner suggest? 50 pushups?

Last edited by isotopesope; 04-26-2013 at 03:54 AM.
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Old 04-26-2013, 09:22 AM   #3
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Quote:
Originally Posted by isotopesope View Post
Internal or external? I would at least do some Grimmspeed phenolic spacers, motor mounts, and pitchstop. Sti crank. Perhaps a new inlet. What else can you afford? Forged rods? Cams and valvetrain upgrades? Port and polish? Killer bee oil pickup? Light weight fly wheel? Better clutch? More cowbell? More importantly, what does your tuner suggest? 50 pushups?
See..... exactly why I love this kind of community/resource.

Thanks Isotopsope! All great questions. I already have a considerable amount external stuff done, and I hadn't even thought about adding to the external bits, but I'm sure there is more to be done.

I'm mostly thinking of internal bit, since the motor will be torn down anyway, and it's not often a 40K motor needs to be, so might as well take advantage, right?

Here is what is already done:

Invidia Catless downpipe/bellmouth
Invidia Q300 exhaust
Blouch 380XT turbo with ported wastegate (to resolve previous boost creep)
2 stage colder plugs
DW255 fuel pump
AEM EBCS
ID 725 injectors
Cobb CAI with box
Process West TMIC
Custom tune
I might be missing something...

Quote:
Originally Posted by isotopesope View Post
Internal or external?
I can' tthink of anything external (which is why I'm here - N00B) other than maybe a header and uppipe? What else externally would you suggest?

Internal is what my main concern was. I've thought about a different crank, but that's all I really know about. I'm eager to research your suggestions.

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Originally Posted by isotopesope View Post
What else can you afford?
I can afford what the normal guy with a wife will allow him . Seriously though, I'm willing to spend a reasonable amount to get a reasonable gain. I'd like to not go over $5K, since I've already got $7ish in it (more than my original budget, but I had unrealistic expectations back then).

[quote=isotopesope;39678423] Light weight fly wheel? Better clutch? quote]

I haven't converted it to a manual tranny yet. That is a project that I am both looking forward to and dreading at the same time.

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Originally Posted by isotopesope View Post
More cowbell? More importantly, what does your tuner suggest? 50 pushups?


KCCO!

The tuner just let me know about the bad news yesterday, and I asked him via email for suggestions. I'm always very interested in what he has to say.

As for the push-ups, that was my GF's suggestion.

Thanks! Really helpful, and I appreciate it!
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Old 04-26-2013, 09:33 AM   #4
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Quote:
Originally Posted by eugeneutopia View Post
Unfortunately for me, my '10 FXT has lost compression in at least 2 of it's cylinders. My tuner is going to replace the pistons with JE EJ257 pistons and KS Tech air pump delete plates.

My question is this: While the tuner has the engine torn down, what else do you think I should have done? Short of using thinner gaskets to increase compression, I don't have any experience with this kind of thing.

Any thoughts are appreciated!

Why would you want to increase the compression?

If you are doing pistons, do the rods and bearings as well.

There is no need for a different crank if the oem one is in good working order.
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Old 04-26-2013, 09:44 AM   #5
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I would definitely do Inlet, TGV Deletes, Phenolic spacers, header, ewg.
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Old 04-26-2013, 10:35 AM   #6
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Add a ptp lava blanket and some dei reflect a gold to your already nice mod list!
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Old 04-26-2013, 11:44 AM   #7
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Quote:
Originally Posted by Dr. octagon View Post
Why would you want to increase the compression?

It's been my experience that increasing compression will also increase power, which is always good. I know that was helpful with the motorcycles I've been around, but I'm new to the car thing. I assumed it would be a viable option.

Last edited by eugeneutopia; 04-26-2013 at 11:49 AM.
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Old 04-26-2013, 11:58 AM   #8
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Quote:
Originally Posted by eugeneutopia View Post
It's been my experience that increasing compression will also increase power, which is always good. I know that was helpful with the motorcycles I've been around, but I'm new to the car thing. I assumed it would be a viable option.
I would talk it over with the guy building your block to see what he has to say about compression and the fuel/boost you'd be running on it. Don't want you blowing anything up now, do we?

Personally, I wouldn't even touch my compression unless you were running e85.

Last edited by Mr Wrex; 04-26-2013 at 12:05 PM.
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Old 04-26-2013, 12:06 PM   #9
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increasing compression is beneficial in n/a applications.

stroke it to 2.7! hahaha i had a built n/a motor in my last impreza that i had stroked out to a 2.7 with hi comp pistons, forged rods, cams, p&p, blah blah blah. it was killer.

if you're already breaching budget, perhaps leave the auto tranny alone? ipd is selling rallitek, so they are blowing stuff out for cheap... you could at least pick up one of their tranny mounts:
http://www.rallitek.com/RalliTEK-4EA...-Insert/p-4634
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Old 04-26-2013, 12:42 PM   #10
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I was faced with this same dilemma a few years back.

I would do the things that are difficult to do with the engine in.

It looks like you are already going with a set of forged pistons. Depending on final power numbers your rods and crank will be fine. It does not sound like you are doing a full tear down but if you were I would deffinately say good bearings.

In the OP you speak of raising the Compression ratio I would not reccomend this. Instead do some cams. Thats the item I chose in the cosworth 272's and I love them. Get more air and fule in there and exhaust out faster. I spool my turbo faster now and hold more power to redline.
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Old 04-26-2013, 02:13 PM   #11
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Thanks everyone! I'm very grateful!

Yea, this is my first turbo, and it shows. Thanks for the schooling!

Calling Tuner Guy now (Dom)!
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Old 04-26-2013, 03:48 PM   #12
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Ok, talked to the tuner and this is what they are going to do:

Composite TVG deletes which effectively do the job of the Phenolic spacers
Unequal length header
Uppipe
Inlet
Swap Blouch 380XT for Blouch 440XT

It's an addiction!
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Old 04-26-2013, 04:12 PM   #13
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Get the TGV coated if you have the monies for it. You might as well do a 3mm spacer while you have the intake mani off. Other than that, looks like a good list. Good luck satisfying your mod bug... mine is still biting $12k later and I plan on dumping another $8k by the end of the summer
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Old 04-26-2013, 04:57 PM   #14
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I shall ask them about the coated. They were totally out of Cowbell though
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Old 04-26-2013, 05:42 PM   #15
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Quote:
Originally Posted by eugeneutopia View Post
I shall ask them about the coated. They were totally out of Cowbell though


Ummmm.. I dont think you can coat composite tgvs. They are plastic so I would imagine that baking them would destroy them
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Old 04-26-2013, 06:44 PM   #16
eugeneutopia
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Ummmm.. I dont think you can coat composite tgvs. They are plastic so I would imagine that baking them would destroy them
Good point! If I didn't feel so out of the loop about car stuff I might have caught that myself.

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Old 04-26-2013, 07:11 PM   #17
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Ummmm.. I dont think you can coat composite tgvs. They are plastic so I would imagine that baking them would destroy them
Whoopsies! That's what I get for speed reading at work
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Old 04-27-2013, 12:18 PM   #18
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Originally Posted by eugeneutopia View Post
I can afford what the normal guy with a wife will allow him....
Quote:
Originally Posted by eugeneutopia View Post
As for the push-ups, that was my GF's suggestion.
Interesting.
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Old 04-29-2013, 02:33 AM   #19
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Interesting.
Yeah, I have a GF who controls my money as if she were married (Read: having a wife) to me, thereby allowing me only to afford what a normal guy with a wife can afford.

I often refer to her as my partner as well, just to make people wonder. Especially people who like to judge before knowing the story.

I find those people to sometimes be
Quote:
Interesting.
but more often, ignorant.
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Old 04-30-2013, 04:57 PM   #20
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A bit off topic but this is a 10MY with 40K that quit? It's just out of warranty... Talk about bad timing..
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Old 04-30-2013, 05:06 PM   #21
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A bit off topic but this is a 10MY with 40K that quit? It's just out of warranty... Talk about bad timing..
Actually, is still in warranty, 5yr, 60000 mile powertrain warranty, but I'm sure they wouldn't honor it with the other mods that have been done
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Old 04-30-2013, 11:08 PM   #22
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Actually, is still in warranty, 5yr, 60000 mile powertrain warranty, but I'm sure they wouldn't honor it with the other mods that have been done
Gotcha. Not worth a try?
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Old 04-30-2013, 11:23 PM   #23
eugeneutopia
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It would be, but I've been advised that the dealership will look at how often the ECU has been flashed, and it would take 8-9 hours to return the car to stock (I'd have to pay the tuner to do that, since I don't have the tools/space/skill), then pay to put it all back on. Just too much of a risk.

If I had the time etc, I'd sure try though!
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