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Dafydd52
08-01-2014, 16:09
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Right here goes, i been told i can change my linners for bigger ones with increasing space to fit and would have to change big end, iv nearly got all bit to convert to injection.
1. would this increase bhp
2. be reliable
3. would i need bigger cam etc
Mart
08-01-2014, 16:18
78mm* liners will slot straight in. Probably best to source steel items, for durability/reliability, given the liner wall will be thinner. You'll of course need the 78mm pistons & headgasket (fire-ring wise) as well.

It'll naturally increase CC, and yep, a hotter cam than standard would probably be beneficial, although that also depends on which turbo you'll be running.

* 76.6mm (aka 'grp A'), and 77mm are also available as a direct straight fit.
Dafydd52
08-01-2014, 16:22
New poster! (less than 10 posts)

cheers, what turbo wud you suggest? within cost factors too. i was told 76.6 was best in terms of strain on engine.
Mart
08-01-2014, 16:30
The choice is endless. Is it going to be a 'fast road' car, dragstrip beast, track attack motor?

76.6mm would be the more durable, but for the cost vs gain, you'd be better off staying o.e (76mm), or all out with the 78mm spec.
Dafydd52
08-01-2014, 17:38
New poster! (less than 10 posts)


The choice is endless. Is it going to be a 'fast road' car, dragstrip beast, track attack motor?

76.6mm would be the more durable, but for the cost vs gain, you'd be better off staying o.e (76mm), or all out with the 78mm spec.

Yea i know wat u mean, bet the piston kit is £££s
So if i put the 76.6 in, i was told the pistons wud be ok with standard?? or is it dodgey!!
Adey aka Ewok
08-01-2014, 17:43
do you mean standard pistons in 76.6 liners?
Dafydd52
08-01-2014, 17:56
New poster! (less than 10 posts)


do you mean standard pistons in 76.6 liners?

Yes mate.
Adey aka Ewok
08-01-2014, 17:58
it would rattle like a mofo if you did that, probably smoke too. you match the pistons to the liner, so 76mm piston in 76mm liner 76.6mm in 76.6mm and so on:agree:
BluntyR5GTT
08-01-2014, 18:00
:agree: spot on
Dafydd52
08-01-2014, 18:05
New poster! (less than 10 posts)

cheers, any ideas where too get good piston kits and cheap:):)
Adey aka Ewok
08-01-2014, 18:07
depends if you want standard or oversize?
Dafydd52
08-01-2014, 18:09
Well if im going bigger might aswel go 78's lol!
Adey aka Ewok
08-01-2014, 18:12
http://www.ebay.co.uk/itm/WOSSNER-FORGED-PISTONS-AND-RODS-RENAULT-5-1-4-GT-TURBO-/130482525603
Dafydd52
08-01-2014, 18:37
http://www.ebay.co.uk/itm/WOSSNER-FORGED-PISTONS-AND-RODS-RENAULT-5-1-4-GT-TURBO-/130482525603

ouch blimey!!! thats scary. Converting to injection is costing a worthy ouch, need santa too come back!!
Adey aka Ewok
08-01-2014, 18:41
stick to stock size plenty make big power on them