3T GTE Tech

[steeko]

FYI, head bolts from ARP, cost is $180 and takes about 4 weeks to get here from USA.
Also got a head gasket off yellowrolla thanks.

[Diz44zy]

Sorry champ, but if you have to ask these kinds of questions, you shouldn't be the one ordering your pistons.

The reason I asked this question was to learn so that I know for next time. Was there something wrong with asking this question? Apologies if there was.

Thanks YellowRolla, your info has been useful.

I guess all I'm wanting to achieve is to run a little more boost thru my 3TGTE. I was hoping for around 15 PSI without a huge amount of lag, so nothing to huge. I'm thinking of running a T28BB turbo with custom exhaust manifold and dump pipe. To achieve this will I require an aftermarket ECU or should the stock one do the job?

Sorry if these are such n00b questions but I have to ask someone and the Toymods community has always been very helpful.

[YelloRolla]

No worries - you will not have a laggy set up with T28 - something like a GT28RS or 2871will go good on your car and will be very responsive - you will need a good exhaust manifold to get the best response.

You will definitely need an aftermarket ECU, I would go for something that also does away with the stock distributor.

[7t5-27]

[QUOTE=YelloRolla;1058200]To grossly simplify it, it is going to depend on cam choice, boost pressure and fuel type (combustion chamber efficiency will largely limit what you can achieve and since your most likely not changing that then there is not much point in harping on it).

Cam timing influences the dynamic compression ratio, if you reduce the dynamic compression ratio by longer duration cams, then you will need to increase your static compression ratio, or wind up the boost (or both).

QUOTE]
Longer duration cams would justify the 8.8 CR 87mm arais pistons I am using in by motor, my question is will the 288 cams (all I have) in the NA version work in the turbo version, unfortunately as a school teacher with one in college I don't have the disposable income I once had. (can't buy more cams) I am not looking to build a monster motor just one that runs well with a reliable (strong) bottom end, boost and programable (SDS) injection/ignition. Thanks for the info so far, I do subscribe and I soak up usefull knowledge like a sponge. Be Safe
Greg

[YelloRolla]

I don't really know the answer to that, as it is all relative to what you're trying to achieve IE is it going to have a big turbo, launch control etc? You're best off just setting it up with what you've got, and then try advancing the intake cam to get the mid-range where you want it, or retard it if your looking for more top end power.

Longer duration cams will work, and you may be able to get away with a lot more boost too (in fact I am struggling to remember what the cam duration was in my engine, even though the cams were stock, we measured it out). I ran 8.8:1 with the stock cams and the car was pretty toey, but it didn't exactly set the world on fire at dyno comps.

Just for the record, what turbo are you going to run?

[Diz44zy]

anyone run the adaptronic 420 on their 3tgte? From my research I'm hearing good things. Any info would be great since I'm far from a wiz on the topic.

Cheers

[sheepers]

I'm not sure if its been covered yet but i thought id put this in here as it seems the most logical spot.

http://www.toymods.net/forums/showth...44#post1052944

sheepers

[7t5-27]

I don't really know the answer to that, as it is all relative to what you're trying to achieve IE is it going to have a big turbo, launch control etc? You're best off just setting it up with what you've got, and then try advancing the intake cam to get the mid-range where you want it, or retard it if your looking for more top end power.

Longer duration cams will work, and you may be able to get away with a lot more boost too (in fact I am struggling to remember what the cam duration was in my engine, even though the cams were stock, we measured it out). I ran 8.8:1 with the stock cams and the car was pretty toey, but it didn't exactly set the world on fire at dyno comps.

Just for the record, what turbo are you going to run?

At this point in time it is a CT26 (price was right ie Free) from the supra motor 7mgte, I am not looking for a drag car just one that has more power than it does now. somewhere past 200 not more than 300 if that makes sense. As this is all new to me I am learning as I go as I said earlier I research, look, listen and hopefully learn from what others have done before me. So any help is appreciated. Be safe
Greg

[Diz44zy]

Note that the posts have been milled down, this is no hassle for someone competent.

Are there any foreseeable issues with milling down the posts to fit the ARP head bolts?

[YelloRolla]

no issues whatsoever. Toyota should have milled the posts down at the factory - this would have given more clearance between the bolt heads and the cam cover, which would have saved me a whole bunch of work over the years.

[Diz44zy]

Another quick q and I know the answer isn't going to be cookie-cutter

If I were to run fogies with say 8.5-8.8 CR with stock cams, what effect/limitation would this have on performance/ boost etc. Keep in mind this is for a street application running a CT26 or T28 with around 15-17 PSI. Also what else could be done to correct for this?

Cheers

[YelloRolla]

It'll be alright.

There will be a trade off no matter the combo; you will eventually hit a certain point of cylinder pressure vs fuel octane where the flame propagation will be so fast, that to avoid detonation you will need to retard the timing to a point where you no longer be able to apply sufficient effective pressure to the crank at the right time, and power will go away.

[SilverRA23]

Not sure if this is the best place to ask or not.. but I will give it a shot...

Have noticed a cheap 3TGTE on ebay and it got me thinking. Would that engine slot into the same space a 2TG currently does?

I imagine the blocks are pretty similar, I just wondered how much bigger the head and ancillaries might be.

Thanks in advance

[Diz44zy]

You can
a) get a stock one from Toyota - these are only good up to 86.0mm bore diameter after that, the gasket hole is a bit small for the bore. These have limited success depending on boost, whether or not O rings are present, and head bolt choice.
b) get a copper gasket from Ridgecrest Engineering (requires O ringing for best results)
c) get an HKS MLS gasket (this is the both the easiest and the best solution IMO as it requires no O ringing).

I recommend head studs in ALL applications.

Anyone know where to source a HKS MLS gasket?

Cheers
J.

[YelloRolla]

Anyone know where to source a HKS MLS gasket?

Cheers
J.

Yes - PM me if you want one.