Compression

[SilberKatze]

I know that one of the problems with turbos and our cars is the high compression. I also know that many N/A Supra owners who put turbo kits on their car also swap out their headgaskets in order to get a lower compression. Is there a reason that this wouldn't be possible on our cars? It may be a stupid question because I don't know much about the Duratec V6 and only know about the Inline 6's from Toyota. Neverless, anyone have an idea??

Jake

[NorCalCoug]

I don't think swapping out a headgasket for a thicker one is the best way to get lower compression.. You're exposing more of the headgasket to cylinder pressures instead of the cylinder walls themselves. I think the best idea for lower compression is a piston swap, or going with heads off of a duratec with lower compression (I don't remember which heads had like a 9.5:1 stock compression...)

[1TURBOFOCUS]

for a boosted street car the stock compression will be just fine an can go as high as 15 to 16 psi with good gas 93/94 oct.

tom

[pgtatx]

If you do want lower compression...you'll need to either get a set of lower compression pistons...usually dished ones...or get the combustion chambers opened up...those are the safest ways.

[ShinyBlackCat]

for a boosted street car the stock compression will be just fine an can go as high as 15 to 16 psi with good gas 93/94 oct.

tom

IMHO, I don't think a stock Duratec motor would last very long at 16 psi, no matter how great your gas is.

[qstorm]

compression in a v6 is 9.7 = 1 and i 4 is 9.4=1, the they are safe for a low boost setup.

[LowerdXpectations]

:confused:

OK- this was my biggest question when I first learned of the new turbo kit coming out. I don't know about everyone else, but if I'm paying 4 grand for a turbo kit, I want to be able to CRANK that baby. (15-16 psi would be nice) Does anyone even MAKE pistons for the Duratec? How does whoever is building the kit plan on lowering the compression? Mr Hightower- and comments???

[pgtatx]

If you want lower compression forged pistons, and forged rods...

We can get them for ya. We have found companies willing to make then for us.

Feel free to contact me at jeremy@duratecperformance.com

Expect to pay around $1500 and up for a set of all 12 parts...do not forget about the rods...theya re weak too. But we are here to save the day.

www.duratecperformance.com

Shameless plug for my own company.

We will be gauging interest on these parts soon enough.

[ChrisHightower]

The first version of the kit will work fine on stock internals. However, we have plans on releasing a 450-500HP kit in the future. This would be a larger turbo as well as rods and pistons. That's probably sometime by the end of this year, possibly early next year. Oh, this will probably also be on the 3L engine.

We just need to get past this first kit. :)

[Kinger]

However, we have plans on releasing a 450-500HP kit in the future. This would be a larger turbo as well as rods and pistons. That's probably sometime by the end of this year, possibly early next year. Oh, this will probably also be on the 3L engine. :eek: OMG must save money........

[Outlaw4Shrt]

<------- starts saving pennies and nickels now for 3L:biggrin:

[pgtatx]

And what transmission is going to be able to handle that amount of power? What about the crankshaft and pulley? Rod bearings? Axles? etc...

There's alot that goes into that work there...you'll all need to save more than pennies.

In case you care...I can get you all the engine rebuild parts...if you all want to buy a larger turbo and upgrade the transmission.

You want a bulletproof bottom end...it's on it's way.

[Kinger]

And what transmission is going to be able to handle that amount of power? What about the crankshaft and pulley? Rod bearings? Axles? etc...

Bulldogg box, with full lube system and modeo spec gears. Quaife dogg box if you like that. Crankshaft is forged and very strong, pulley is questionable, trimetal bearings and accusump will take care of your rods, and stage 3 axles from driveshaft shop.com will hold 500 hp. Not cheap but yes it possibe and when I'm done with my 3L and recover from that expense I might get a wild hair up my wazzoo to prove all these will or will not hold up to 500 hp. Buckshot77 will also be a proving grounds. If he gets 450hp and drives they way he does and nothing breaks I'll be 110% confident its bulletproof. Real predictament is it woud be very cool to say I have 500hp but traction would be a little tricky ;)

[pgtatx]

Don't be too sure about the bulldog box...basically right now I can't say why...but don't trust it yet. It's sad cause I was about to get some of that work done.

I was told that the crankshaft wasn;t that strong, and may have problems. I have yet to personally test it, but I think the bearings are more of a problem. Also, we should be carrying stronger bearings for much less than the trimetal bearings go for.

I know it can be done...but I was just pointing out the facts for the less knowledgeable people who thing they drop the $5000 on a kit and can make all the power they want.

I'm still running all NA...I just like looking out out for my fellow cougar owners.

[Kinger]

Understandable my friend, we all have different knowledge levels and I know its hard to sometimes pick up on who knows what and who doesn't. One thing that never changes though is that the people like you and I who know how much cost were in for are the ones that pull the trigger and lay down the cash. I got a $8000 budget for my NA 3L and hopefully in abour 7 months I can "unviel" it :)

On the bull dogg box, I too have questioned the integrity of how much TQ she'll handle, but it appears to be very capable to hold at least my goals, 500hp would test it that's for sure. Can I ask what your doing? I'm thinking this is the only option out there right now but please enlighten me if there are others :) Thanks!

[LowerdXpectations]

Ok, Chris I got some questions for you:

how will the fuel map be calibrated? Is this something that we are going to be able to play around with after we get the kit?

What if I want a front mount instread of the water/air IC?

How much will it be if I just want the turbo manifold and down pipe, and can I get them now?

-jon

[Outlaw4Shrt]

you all want to get off the soap box for five minutes? I'm sure when these

less knowledgeable people who thing they drop the $5000 on a kit and can make all the power they want

have a question about transmissions or any other performance modifications for their cars they'll be sure to ask you. Keep bashing Terry's product though, I'm sure you've spent the countless hours yourself testing and designing that stuff yourself, you know other then gut feeling what exactly's wrong with it and have come up with stuff yourself to correct it. No, well until you yourself come up with a better product I'd be a little more reserved with whose you decide to trash. I'm glad you feel like your stuff will be the end all be all in engine build-ups but has it been tested yet? What work have you done in actually designing the stuff other then paying other people to do it? How can you vouch for the quality of their stuff yet? It's great that some of you out there are blessed with a lot more money to spend then others but no, it doesn't make you any more knowledgeable then anyone else nor does everyone need to hear about it. Stay on the look out for the little people though. Thanks.

A

[pgtatx]

What's your problem?

Seriously...I was just putting out questions that I thought needed to be answered.

I haven't bashed anything from terry as I have spoken to him directly many times. But there are some things that you don't know yet, which i recently found out.

And don't go bashing us. We do not have the ability to make pistons and rods, so we will be contracting a company to do this. These are not no-name companies, so we know the quality is there. And we will be help out the people who don't have alot of money by finding the best prices, and not jacking up our pricing.

Don't attack the people who try to help...attack the ones like yourself.

We spend hours every day making connections, researching parts etc.

We are having cars test out products, dyno them etc. We take money out of our own pockets to help you guys.

Since I can be the mature one and forget about people like you, I'll help the many many others who have contacted us.

What you don't know that's said in private is where your post loses all meaning.

If there's anything I can ever help you I will gladly...but please watch the childish comments. I'll be glad to help anyone who wants it. And if I can;t I'll pass you along to someone who can.

BTW...if you every talk to Terry, he's an excellent resource for tons of info. Very nice to talk to, and I'm a fan of his british accent.

Good luck...

[Outlaw4Shrt]

Hey you know, I guess I just call it like I see it. Chris comes on here and mention's the fact that eventually he's going to come up with a high horsepower turbo application and woo woo, hold your horses, don't even think about getting the turbo from a guy whose spent months of his own time personally involved in the design process, knows what he's doing, and plans on selling a product that is a complete, and a complete reflection of him as well. I'm sure you know what's more feasible for the cougar having been intimately involved with it's design or spent months in the design process for parts to it's application, right? Some one else mentions a bulldog box and nope, no you can't do that either, from what I understand you've never owned one nor been involved in the process of building one, but from a gut feeling you know that it's not the answer, ignoring the fact that I personally haven't heard of one person whose had anything but praise for the tranny other then Leo who I think has been through six of them and just so happens to also professionally race his car.

I have no problems with Duratec Performance whatsoever, none, my problem is with you coming on here and yes, belittling someone else's work and then promoting a product, of not even your own work, in the same post. Obviously what's said behind "closed doors" I can't have any comprehension of, but I am the customer, I see the product, and I see the reviews and the opinions of the product, so what I see on here helps to form my opinion on the product unless I have some first hand knowledge of it. From my understanding, yes it is poor buisness practice to knock another mans work without the slightest to offer yourself. Yes I have spoken with Terry before and not once has he mentioned to me that he couldn't build a bulldog box strong enough to handle that kind of power. I'm sure you all are the best of pals but I doubt he would approve of you knocking his workmanship to possible customers regardless of what you all have discussed.

And don't go bashing us. We do not have the ability to make pistons and rods, so we will be contracting a company to do this

I'm not bashing you, I'm just pointing to the fact that all you are is a middle-man out to make money by distributing someone else's product. That's all you are from what I've seen. We live in a capitalistic society, there are no handouts. I'm happy that there are guys like you out there that are doing the dirty work for us getting us the parts we need, but you're out to make that mighty dollar just like everyone else so please step down from the "you all shouldn't challenge me cause I'm really here to help you" pedestal. My point is that I haven't seen a single product yet that you have to offer, but you have no qualms in taking the liberty to knock someone else's with nothing to represent your claims or products other then gut feeling.

Hey but you're right, "I'm the @sshole" for calling B.S. against unsubstantiated negative claims against another mans product or ability to design one. Thanks for taking the moral high-ground on this one.

A

[pgtatx]

What's really funny...

I have yet to knock anyone's projects, or parts, or workmanship at that.

Chris Hightower says they will be offering parts, so I asked the simple questions of what will be included, and needed to make the kit run. Kinger and I went back and forth, and I speak with him on PM's, and basically all we are doing is trying to help.

What I said about the bull dog box comes from a substantial source, which I may not continue to say more as it;s up to them. I was about to get a Bull dog box made, but now I'm waiting. Doesnt mean I never will.

You are making up this "knocking of stuff" by me. I don't even knock those gimmick and snake oil products, unless I have seen actualy proof against it.

Also, basically I have no unsubstantiated clamis of a positive or negative nature. I have information to back up anything and everything I say.

But, if you so choose to attack me with no factual proof disproving anything I have said, or saying I knock people's stuff...feel free to pm me, IM me, email me, or call my cell phone. I am a very open person, I'll talk to you, i can yell at you if it turns you on. We can arm wrestle, or just all out brawl, or run, or jog...I don't care. But do me and yourself a favor, and don't continue to pursue trying to bash me in any way. Cause at any time I can document anything and everything I say.

I don't go by gut feelings. And yes I have first hand knowledge of many things, and yes I design many parts myself too...I'm not only the middle man.

And as I always say...good luck in future endeavours...and never become a lawyer. :)

Thanks, and come again.

[Outlaw4Shrt]

What I said about the bull dog box comes from a substantial source, which I may not continue to say more as it;s up to them. I was about to get a Bull dog box made, but now I'm waiting. doesn't mean I never will.

Maybe I didn't make myself clear last time, but again, how is this anything else but gut feeling? What evidence do you personally have to show for it? Did you run the studies on his product, and if not, how is it your right at all to say? You can't back this up with evidence, what evidence do you have to show? None. Do you see what I'm getting at? Let the people who have the evidence do the talking. I'm sure that source you speak of approves of you posturing about their studies. If it's up to them, how is it your place to say at all?

If it's not your place to say, then don't say anything and shamelessly try to denounce another mans product in order to bolster your own that doesn't even exist yet. Evidence? Where are the numbers, test runs, and long term data on these pistons and rods for our cars? I haven't seen any. I'm not saying that what you may eventually release may not be a fantastic product, but where is it? Where is your evidence to back it up? You offer these products up as an option, but to my "limited" knowledge, they don't even exist yet, so how can you personally corroborate it?

But hey, if you have the evidence and studies and research against others and for your own products, lets see it. I know I'd be happy too, seriously.

[pgtatx]

I'm not responding to you here on the board. I'll PM your stupid self.

Damn are you just stubborn.

[Outlaw4Shrt]

fair enough

[Kinger]

C'mon guys can't we just get along? :)