Rotrex 2ZZ BHP

[KRAMSNEHPETS]

not looking for more power. want it to be reliably at what it is now

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[KRAMSNEHPETS]

Think it will be crank grind, acl shells, uprated oil pump and at the suggestion of headcase low comp pistons

[m1tch]

Think it will be crank grind, acl shells, uprated oil pump and at the suggestion of headcase low comp pistons

You need to decide if you want bi metal or tri metal bearings, luckily the 2zz is fairly well supported in terms of bearing choices unlike the 1zz.

Also worth adding an Accusump oil accumulator to the list.

[KRAMSNEHPETS]

Seem to be heading for a darton sleeved block with low comp pistons, balanced crank etc!

[KRAMSNEHPETS]

Sleeved block on its way . Low comp pistons, uprated oil pump, bearing etc to be ordered. Headcase to build a new short motor, will trailer car down to him to transfer my head over etc when he has it ready. Run it in for 1000 miles (1 week last time) then get the map tweaked, should end up with a strong powerful experience!

[1979scotte]

Try not to break this one.

[KRAMSNEHPETS]

Yes M!

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[KRAMSNEHPETS]

Sleeved 2zz block has arrived and is with headcase. Is at engineers being measured etc to order correct low comp pistons and bearings etc. Will have  uprated oil pump and head gasket, arp bolts etc. Will deliver car to bexhill on sea once bottom end is built to have engine removed  and my head fitted to new block. Have also placed an order for a Megillian racing 2 ZZ 2.5" exhaust system. Have been told that once run in and finally mapped it should be circa 370 bhp. Exhaust will be 6 weeks time. Car back on road mid sept, missed all the lovely summer weather...

[KRAMSNEHPETS]

Little update
Megillian exhaust arrived. Due to trailer car car to headcase  22nd sept as by then he should have a built  up short motor to transfer my head to. sleeved block, low comp pistons, arp bolts , acl bearing etc. Also going for an oil cooler, Hope to get it back after a week to run it in for a 1000 miles and then get the map tweaked to release its full potential

[KRAMSNEHPETS]

Delays.... Pistons not due in for another 3 weeks. Block has then got to be bored to match. All other bits have arrived, bearings , oil pump, studs, oil cooler etc. Work commitments and 30th  year of marriage weekend away means i will not get car to headcase until mid October.... On road end of October i guess. Its a long wait

[jvanzyl]

Congrats on the 30th wedding anniversary!

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[m1tch]

Delays.... Pistons not due in for another 3 weeks. Block has then got to be bored to match. All other bits have arrived, bearings , oil pump, studs, oil cooler etc. Work commitments and 30th  year of marriage weekend away means i will not get car to headcase until mid October.... On road end of October i guess. Its a long wait

What bearings did you go with in the end?

[KRAMSNEHPETS]

ACL I believe

[m1tch]

ACL I believe

Which sort though? Bi metal or Trimetal? Just wondering as I am going to be running Bi metal King bearings in my build.

[J03]

As far as I know the bi metal type are mainly OEM replacement, whereas the tri metal "Race Series" are uprated. The tri metal versions should take higher loading for longer durations.

[m1tch]

As far as I know the bi metal type are mainly OEM replacement, whereas the tri metal "Race Series" are uprated. The tri metal versions should take higher loading for longer durations.

I believe the OEM Daido/Taiho Toyota bearings are Trimetal which is interesting.

[KRAMSNEHPETS]

Pistons have now arrived! They are due to be dropped off to engineering shop so that the block can be machined to match them. Hope to deliver car to headcase 6th Oct and get it all under way. Hope to have it fitted, all run in and mapped by end of October. Cant wait but have to... 

[m1tch]

Pistons have now arrived! They are due to be dropped off to engineering shop so that the block can be machined to match them. Hope to deliver car to headcase 6th Oct and get it all under way. Hope to have it fitted, all run in and mapped by end of October. Cant wait but have to...

What compression ratio did you go with? Did you go for the standard 82mm or bore out further to 82.5mm?

[KRAMSNEHPETS]

MAHLE  9.0:1 COMPRESSION 82MM, I think

[neogeo13]

How's the build going?

[KRAMSNEHPETS]

getting there, block being built up, hope to hear that it will be fitted tail end of next week. am also busy now building a 2zz track day car!! 

[KRAMSNEHPETS]

Not long now, engine back in car with low comp pistons,uprated oil pump, acl race bearings etc. Might be able to collect sat am. Have a week of running it in then back to tuner sat 1st dec for map tweak. Hoping to be circa 380 bhp

[ChrisGB]

That'll do nicely!

[KRAMSNEHPETS]

lets hope so, with reliability!. Sold your car yet

[ChrisGB]

lets hope so, with reliability!. Sold your car yet

No, not yet. Going to have a go as wider advertising base when I get time!