N/a engine rebuild, what mods ?

[The Beardo]

Just picked up a ph1 172 engine and I’m about to strip down ready for a rebuild but what upgrades/mods do you recommend?

I don’t want to run itb’s as it will be in a daily and touring Europe and I’m not chasing big bhp figures.

Your opinions please?

 

[bloke]

phase 2 head ?

 

[The Beardo]

I always thought the ph1 head was the better head or is that sooo 2008 ?

 

[bloke]

people just have this thing that bigger exhaust ports are a good thing.

 

[The Beardo]

I was planning, 182 manifold, port and polished inlet , v6 airbox ported head ( now a 182 head) group n timing, arp bolts, pas and air con delete and a session with Chris at Efi, am I barking up the wrong tree or would that be a good engine set up?

 

[deanoE30M3]

Well you could go for this in kit version!

Still not cheap either way..?

https://www.pure-motorsport.co.uk/c...gine/clio-2-rs-pm-240-competition-engine.html

 

[bloke]

that's getting there. depends on your budget as well. i would just get the ports tidied up a bit, deshroud the valves and skim it a fair bit to bring cr back up.

 

[The Beardo]

I don’t have a budget but then I don’t want to spend thousands seeing as it’s not a race engine. So Bloke, what would be your set up if you were me? ?

 

[bozothenutter]

Tabbed bearings
Add heat exchanger from a clio3
Innards from a clio 3 rs

And I'm sure somebody at some time made 3 ring pistons to go with 150mm rods, just can't find any now.....

 

[robzracing]

I wouldn’t bother messing with the head too much.
Supertech valves and springs if budget allows.
ARP rod bolts as you’ve already planned.
Megan bottom pulley (keyed)
And everything else as you already planned. Group N timing and 182 manifold.
If you can stretch to an exhaust as well then you’ll get the best from a remap and should have a strong, reliable engine.



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[bloke]

rob has pretty much summed it up. get the compression up will help it get some decent power as well.

 

[The Beardo]

What would be the best way to increase the compression ratio?

 

[DanSej6]

Skim the head.
Could change the pistons too, but head is alot cheaper to skim. All depends what kind of ratio you're after.

 

[JamesBryan]

Skim the head.
Could change the pistons too, but head is alot cheaper to skim. All depends what kind of ratio you're after.

Don't go too much though or you'll have problems tensioning the belt correctly, with the oem tensioner anyway.

197 pistons will give you a bit more.