Tu2 Upgrade

[ESPANTA 0]

hi guys

 

would like to hear some help/opinions/advices on a project engine i'm planing

i currently have a xsi that still has the engine full stock(well mostly), a tu2j2. and i like better the response/drivability that i have with the 1.3 rather than with a 1.6 (tu5) so i would like to build some kind of upgrade but keeping the same tu2 drivability/ engine response style

 

 

so here's the specs i'm looking into:

 

tu2 port/polished/skimmed head

3 angle valves

catcams springs and retainers

catcams 671

balanced rockers

adjustable pulley

 

 

tu3 bottom end(k6b) bored/skimmed

tu5jp4s(c2 vts) pistons with valve cut outs and new rings

tu5jp4s(c2 vts) polished/balanced rods

tu3 balanced crank

arp rod bolts

1.3 balanced flywheel

balanced crank pulley

obviously block refresh(retainers, bearings etc)

 

 

hybrid 1.0/1.1 gearbox

stock spark plugs(tu2 ones)

ford coil

8.5mm leads

bosch 155cc injectors

3bar fuel valve

4-1 header

2" exhaust with silencer

costum backbox

upgraded engine mounts

 

 

so this is what i've thoughted so far

but now i've got a couple doubts on where to go iet

 

like this

-ported/polished rallye intake with 60mm TB and raceland type manifold(could make it a daily engine this way)

or

-costum manifold with cbr600 itbs(couldnt drive this as daily this way cause it doesnt pass MOT neither the cops would leave me alone)

 

i already have a spare rallye intake laying around at home

 

other one

 

which transmissions sould i use? i would like a tougher ones. was thinking on a tu5jp4 ones but not sure

 

other one

 

which ecu is a good price/quality? no need for a top performace one. a good one for tuning the engine correctly is more than enough. i have no clue on this field

 

other

 

a good clutch to use? any ideas?

 

 

hope you can help me with my project

thanks

[burr_2000 1]

Hi I am not sure about this build, your taking a 1.4 block, boring it out to a 1.6? Fitting 1.6 rods And sticking with the 1.4 crank

[ESPANTA 0]

i'm not boring to 1.6. i'll only be fiting larger pistons.

nothing that hasnt been done before already

Edited October 19, 2013 by ESPANTA

[burr_2000 1]

I have never seen this done before? A standard bore of a tu3 is 75mm and is a c2 piston not something like 78mm?

[welshpug 1,661]

I would just get a complete tu5j2 or 3j2 tbh, far less work, you can keep the tu2 as a spare or sell complete.

[ESPANTA 0]

I have never seen this done before? A standard bore of a tu3 is 75mm and is a c2 piston not something like 78mm?

its been done already. and more than once.

 

I would just get a complete tu5j2 or 3j2 tbh, far less work, you can keep the tu2 as a spare or sell complete.

far less work and far less fun.

tu5 its too lazy coming up on the rpm compared to a tu2. its a undersquare engine which gives it a good torque but makes the engine lazy. not the kind of life you feel on a tu2 which is an oversquare engine and gives me a lot more fun to drive.

i dont even speak about the tu3. that is the most lazy undersquare engine i've ever seen.

 

anyway if i didnt wanted to have some work i would just turbo it with soft pressure and leave it with more bhp and more reliable than N/A. but i dont want to

Edited October 20, 2013 by ESPANTA

[burr_2000 1]

http://forum.205gtidrivers.com/index.php?showtopic=135510

[ESPANTA 0]

http://forum.205gtidrivers.com/index.php?showtopic=135510

similar to that engine

but instead of tu5j4 pistons and 646catcam i'll use tu5jp4s pistons and 671catcam

 

my only doubts yet are the ones above

like this

-ported/polished rallye intake with 60mm TB and raceland type manifold(could make it a daily engine this way)

or

-costum manifold with cbr600 itbs(couldnt drive this as daily this way cause it doesnt pass MOT neither the cops would leave me alone)

 

i already have a spare rallye intake laying around at home

 

 

other one

 

which transmissions sould i use? i would like a tougher ones. was thinking on a tu5jp4 ones but not sure

 

 

other one

 

which ecu is a good price/quality? no need for a top performace one. a good one for tuning the engine correctly is more than enough. i have no clue on this field

 

 

other

 

a good clutch to use? any ideas?

 

this are the only parts i'm still thinking on which to choose

[ESPANTA 0]

 

other one

which transmissions sould i use? i would like a tougher ones. was thinking on a tu5jp4 ones but not sure

other one

which ecu is a good price/quality? no need for a top performace one. a good one for tuning the engine correctly is more than enough. i have no clue on this field

other

a good clutch to use? any ideas?

 

 

where are the project tu engine builders? i need opinions/feedbacks/advices anything would be appreciated on the transmissions clutch and ecu to use

im expecting between 130/140bhp.

 

the intake is decided. port/polished rallye intake with bored TB

Edited October 24, 2013 by ESPANTA