Now offering TRD4Life Built 3.3/3.0 Hybrid Engines

by **trd4life** » Mon Mar 30, 2009 5:42 am

gnegroni not 100% sure what your asking but, putting a stock set of 1mz heads onto a 3mz block increases compression even more than a standard 1mz engine, putting it at approx 11:2:1. For customers that are running N/A this is ideal. For customers that are boosting i am putting a thicker head gasket on to bring the compression back down. But yes the smaller combustion chambers of the 1mz heads paired with the larger bore of the 3mz block does indeed increase compression.

The 1mz heads flow very well for moderate boost levels, and because of added costs, most of the guys ordering engine from me are sticking with the stock 1mz heads. Your looking at approx $1000-$1500 for a set of ported heads done the right way.

by **gnegroni** » Mon Mar 30, 2009 5:56 am

trd4life wrote:gnegroni not 100% sure what your asking but, putting a stock set of 1mz heads onto a 3mz block increases compression even more than a standard 1mz engine, putting it at approx 11:2:1. For customers that are running N/A this is ideal. For customers that are boosting i am putting a thicker head gasket on to bring the compression back down. But yes the smaller combustion chambers of the 1mz heads paired with the larger bore of the 3mz block does indeed increase compression.

Thanks for the input. What I mean about a quenching area or squish action is that since the block bore is bigger than the head bore measurements it allows the air/fuel mixture into a smaller combustion area for better combustion. Toyota has been employing squish combustion chambers on engines like the 2AZ-FE, but can't find anything on the 1MZ chamber design.

So, not only compression increases to 11.2:1 but the squish chambers concentrate the mixture for better atomization and ignition and by having the smaller 1MZ chamber. How does the octane requirements of this engine compare to the stock 1MZ, supercharger or NA?

by **trd4life** » Mon Mar 30, 2009 6:23 am

gnegroni thanks for your input, this will help a lot of the guys that are thinking about ordering. The 3mz/1mz hybrid that i built and tested ran great with 91 octane, not a hint of detonation or knock. That motor i planned on keeping N/A so i opted for standard head gasket instead of the thicker one. 93 would be required for s/c guys of course, like i was saying earlier the guys that are ordering the hybrid's that plan on boosting 5-7psi i will be doing the thicker head gasket bringing the compression ratio down roughly half a point.

The issue here with lowering the compression way down is cost of course, most guys are not going to opt for the forged low compression pistons, and removing material from the combustion chambers to lower the compression is costly as well. Which leaves me with no other solution other than to do the thicker head gasket which has its limits as to how much i can lower the compression.

So a bit of advice for guys that want to do the hybrid engine and make big power, the 9:1 compression pistons are a must have!

thanks guys,

Gabe

by **gnegroni** » Mon Mar 30, 2009 6:55 am

trd4life wrote:gnegroni thanks for your input, this will help a lot of the guys that are thinking about ordering. The 3mz/1mz hybrid that i built and tested ran great with 91 octane, not a hint of detonation or knock. That motor i planned on keeping N/A so i opted for standard head gasket instead of the thicker one. 93 would be required for s/c guys of course, like i was saying earlier the guys that are ordering the hybrid's that plan on boosting 5-7psi i will be doing the thicker head gasket bringing the compression ratio down roughly half a point.

The issue here with lowering the compression way down is cost of course, most guys are not going to opt for the forged low compression pistons, and removing material from the combustion chambers to lower the compression is costly as well. Which leaves me with no other solution other than to do the thicker head gasket which has its limits as to how much i can lower the compression.

So a bit of advice for guys that want to do the hybrid engine and make big power, the 9:1 compression pistons are a must have!

thanks guys,

Gabe

Excellent write up Gabe! BTW, you just confirmed my theories. Not only does it have higher compression, more power, but it kept the octane requirement. WOOHOO!

by **trd4life** » Mon Mar 30, 2009 7:21 am

A rather cool comparison. I raced a from a dead stop and from a roll a 240hp V6 auto Accord 4 door a bunch of times with this hybrid camry and the camry pulled away from the accord like it was sitting still, confirming my butt dyno that this the stock hybrid build with bolts on makes 250+ crank horsepower, and with reliability!

by **TxBmbleBee** » Mon Mar 30, 2009 6:16 pm

gabe how hard are we talking to swap an engine out. Im no where near as knowledgeable as you obviously but im not afraid of a challenge lol. Im assuming i would for sure need an engine hoist. anything else?

by **trd4life** » Mon Mar 30, 2009 7:42 pm

an engine hoist and a bunch of standard tools is all you need.

I'd be happy to help you out over the phone if needed. step by step.

later guys,

gabe

by **ASG14** » Mon Mar 30, 2009 7:58 pm

^ He will too you guys. He helps out more people then anyone realizes.

by **Mr_Chunkz** » Mon Mar 30, 2009 8:50 pm

once i recieve mine, i will attest to gabe's work

lookin forward to poundin out on a dyno =]

by **TxBmbleBee** » Mon Mar 30, 2009 9:05 pm

^^what are the specs chunkz?

by **hskrsolara** » Mon Mar 30, 2009 9:58 pm

what are the chances of running 7psi + on this motor gabe? I would still want to run the SC but want to up the boost while I'm at it...

by **Mr_Chunkz** » Tue Mar 31, 2009 1:14 am

TxBmbleBee wrote:^^what are the specs chunkz?

i will release all that info upon completion of a dyno tune =]

by **trd4life** » Tue Mar 31, 2009 5:57 am

hskrsolara anything over 7psi on stock pistons regardless of whether its a hybrid or not is a disaster waiting to happen. The stock ring lands on the pistons just cant handle the stress. If you want to crank up the boost i suggest doing a set of the 3.3 forged pistons.

by **trd4life** » Wed Apr 01, 2009 5:48 am

Arias Pistons and Eagle rods that were used for this recent build (stock pistons and rods on the right)

by **Eye8Pussies** » Wed Apr 01, 2009 9:12 am

those are sexy beyond belief....

Now offering TRD4Life Built 3.3/3.0 Hybrid Engines

piston and rod pics

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