Tu Tuning, I Just Want 100Hp

[309jazzpanda 39]

Ok slight resurrection of the thread, if I put my s1 106 rallye pistons into my 1400 block with my 1600 tu5 head on would I still have a poor compression ratio or would this actually work?

 

Shed has Had a clear out so got my old gtx block and forgot about the pistons I'd purchased, plus the vtrengine I have fitted Is Getting a bit Smokey

[309jazzpanda 39]

Any thoughts? My only thinking is the cylinder heads are the same for the tu3 and the tu5 so with the rallye pistons I is technically an xsi engine with my original engine number

[burr_2000 1]

Yes your compression ratio will be fine

[calvinhorse 870]

Tu3 and tu5 heads are massively different

[welshpug 1,622]

Tu3 and tu5 heads are massively different

 

 

The ones they are referring to (TU3J2 vs TU5J2) are the same part number, 0200 E6.

 

 

You are likely correct if you mean a TU3S from a 205 however.

[dcc 855]

that tu engine is 40 kg's heavier than my 1.9 8v XU!

[calvinhorse 870]

 

 

The ones they are referring to (TU3J2 vs TU5J2) are the same part number, 0200 E6.

 

 

You are likely correct if you mean a TU3S from a 205 however.

Ahhhh yes! Duh!

 

Dan you weigh 40kg more than most people so evens it out

[welshpug 1,622]

Pretty sure Dan weighs 60 more than me

[RossD 43]

Going by the weights thread on this forum, a built up 8 valve 1.6 TU engine is 110kg. I think the alloy 1.9 engine is in that ballpark or even slightly heavier..... Unless your 1.9 XU is missing its crankshaft or flywheel its certainly not 40kg lighter than a 1.6 TU

[welshpug 1,622]

what do you call a "built up" TU5 though? it certainly was not missing anything but manifolds and ancillaries, and did have a flywheel attached.

 

 

have you seen the difference between alloy and iron TU engines? it is quite significant, 23 kilos iirc!!

[burr_2000 1]

A 106 1.4 xsi head or 1.6 xsi/ 1.3 rallye head and a lets say 1.6 306 head are pretty similar, ' bigger valve heads' . The stock tu3 heads are smaller valve and ports

[309jazzpanda 39]

Sorry yes should have made that clear, I was referring to the tu3/tu5 thing from a 106 306 etc the multi point injection variant.

 

So basically it will work then, theoretically I shouldn't need aftermarket management either then or is this wrong

[309jazzpanda 39]

Well after Christmas I'm going to go for it, now any suggestions for head gaskets? I'm thinking go for uhe thinner 1400 headgasket

[burr_2000 1]

You have to get the gasket to suit the head,a standard tu1.4 gasket will protrude if using a xsi/rallye head

Edited November 29, 2013 by burr_2000

[309jazzpanda 39]

Its a vtr head (black top) which I think has a choice as well but wont matter too much if the heads off hopefully

[309jazzpanda 39]

whilst on this I'm going to wire in a 16 pin obd plug but does anyone have any idea what the wiring is for the plug? I know it doesn't need many wires for the basic management but its the wiring in the plug I need

[309jazzpanda 39]

Sorry to rattle on but the pistons I will be using in my block are 106 ph1 rallye pistons does anyone know whether the conrods will be different between ph1 rallye and 205 spi tu?

[309jazzpanda 39]

Er black top saxo vtr engine is the obd system iso? Just so I can wire in a 16 pin obd socket