bozothenutter
ClioSport Club Member
[emoji5] feel stupid now....
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Breaking cover......*AG content from page 45*
- Thread starter NorthloopCup
- Start date
NorthloopCup
ClioSport Moderator
Needs 50mm butterfly's to get the maximum out of itb's/this spec ideally, and it's only 45's available off the shelf. It's all about the transition/taper from the butterfly to the valve face, with the optimum being around 7 degrees. You can't get that with 45's unfortunately.
A mate of mine who builds big hp n/a and boost zetec and duratec engines was explaining it all to me.
@NorthloopCup Have your overnight parts come from Tokyo yet? :tonguewink:
NorthloopCup
ClioSport Moderator
Lol afraid not mate. Tomorrow apparently. Got the oil cooler lines and fittings though yesterday.
NorthloopCup
ClioSport Moderator
Agreed. The big hp duratecs are running 52 or 54mm butterflies just to get the transition right, which is where the 197 inlet ports are similar in terms of size.
The Ashford f4r on YouTube is also running 50mm butterflies, possibly bigger.
Pure Motorsport use parallel 48s
NorthloopCup
ClioSport Moderator
Have you seen the difference between the 1*2 and 197 ports though? In fact what head are pms running? Is it a 1*2 one? I've just had a watch of that video you mentioned about in your pm as well. Interesting results.
NorthloopCup
ClioSport Moderator
@EVOgone heres some comparison shots of the 2 heads. Inlet ports only as the exhaust ports are identical in position.
172 inlet port:
Lower down in the casting and not as wide as the 197 port. The head is upside down in this pic.
197 port:
Slightly higher up in the casting and substantially wider.
The 2 together:
Hopefully this will help to show why I keep banging on about the transition from butterfly to valve. I'll try and get the full low down to give a proper explanation.
172 inlet port:
197 port:
Slightly higher up in the casting and substantially wider.
The 2 together:
NorthloopCup
ClioSport Moderator
Exhaust ports are the same as the 182 heads mate. Small!
NorthloopCup
ClioSport Moderator
Well still waiting on overnight parts so I decided to drop the coolant and make a start on getting the engine and box ready to lift out. Also had a chance to offer the new smaller ally rad up to see what mounts I need to fabricate.
You can see in this shot some of the mods to the slam panel for the mahoosive airbox too.
Looking a bit sorry for itself!
I've also fitted the alternator and brackets that have recently been painted along with the new upper engine mount. The upper engine mount just needs a coat of lacquer.
More to come.
You can see in this shot some of the mods to the slam panel for the mahoosive airbox too.
I've also fitted the alternator and brackets that have recently been painted along with the new upper engine mount. The upper engine mount just needs a coat of lacquer.
NorthloopCup
ClioSport Moderator
You need a 5pk 847 belt mate. That's what mine is.
Thanks man. I need 3pk for the PMS pulleys though, but assuming the 847 part stays the same.
NorthloopCup
ClioSport Moderator
Yeah I'd assume it does as well mate tbh.
3pk? Thats bloody thin lol
It is lol. No idea why PMS made pulleys that thin. Guess it adds to the weight saving of them over normal ones....
SharkyUK
ClioSport Club Member
F . r . e . a . k . i . n . g . . f . a . n . t . a . s . t . i . c . !
Love the build mate, my hat goes off to you.
So jealous!
Love the build mate, my hat goes off to you.
So jealous!
NorthloopCup
ClioSport Moderator
Cheers!
NorthloopCup
ClioSport Moderator
Cheers! Nah mate. Cba tbh! This is just all a bit of fun for me really, so whatever power it makes I'll be happy with. If it was all out performance I would've run it on itbs from the off, but I prefer to do things a bit different.
NorthloopCup
ClioSport Moderator
Ok so the overnight parts finally arrived for the gearbox. I had a spare 10 minutes today so I decided to fully assemble the mainshaft. EVERY gear on this shaft is now brand new! As it currently stands:
Then it was time to look at the twin fan mounts. Here's the new ally rad with my twin 10" kenlowes. Plenty of go go in these bad boys!
There will also be a full frame around the edges of the rad to ensure good airflow through it for maximum efficiency. I'll use some foamalux to extend it further forward.
And finally for today I've sneaked the header tank into the dishwasher. Hopefully the wife won't see it. Lol!!!
More to come.
Then it was time to look at the twin fan mounts. Here's the new ally rad with my twin 10" kenlowes. Plenty of go go in these bad boys!
And finally for today I've sneaked the header tank into the dishwasher. Hopefully the wife won't see it. Lol!!!
NorthloopCup
ClioSport Moderator
Thanks mate!
How did the header tank come up ?
NorthloopCup
ClioSport Moderator
I got home from work at 6:45 and removed it whilst the wife was still in bed! :wink:Flol @ car parts in the dishwasher. Brave man! 😂
Shiny new gearset looking nice mate
Yeah it wants to be as well for what it's all cost!!! Lol! f**king chocolate Renault gearboxes!
It's come out really well tbf - not brand new looking, but for a 12yr old part it's come up really well. Here's what I did:
I put washing powder inside first along with half a cup of rice and boiling water. Gave it a good shake and left it overnight full of water.
Emptied out and removed the rice (tasted soapy? Lol) then refilled with bleach and boiling water. Left again over night, drained it off and sneaked it in the dishwasher when the fun police wasn't looking.
Masterchef eat ya heart out
Inferno 225 cup
Looking great Mark.
Dishwashers are awesome at cleaner car parts.
I had an inlet manifold in there on an economy wash lol. Came out new.
This build is stonkingly fantastic.
Dishwashers are awesome at cleaner car parts.
I had an inlet manifold in there on an economy wash lol. Came out new.
This build is stonkingly fantastic.
M.C..
ClioSport Club Member
Some very nice parts going on this, just wondering why you did not go for straight cut gears (providing you can get them)
NorthloopCup
ClioSport Moderator
oh I'm a masterchef alright! I can make a meal out of anything! Flol
yeah tbf it's come out really well and it was also on a economy wash at 50 degrees! That's obviously the secret! Lol!
Thanks for the kind words.
Main reason for not going straight cut is cost. They're so expensive for these and I don't have a contact to get a cash deal!! I had the chance of James's gripper box but it wouldn't have been the best in terms of gearing.
M.C..
ClioSport Club Member
How much are they out of curiosity? I have heard my mate talk about £5k+ boxes for his Escort MK2 (he hasn't brought one yet though lol)
NorthloopCup
ClioSport Moderator
Assuming you can get one of the gear sets off gripper your talking about 3.5k I think, possibly more. There's an Italian company that do them as well for reasonable money too. Your still talking 2.5k though. http://www.bacciromano.com/?p=prodotti&l=eng&cat1=24&cat2=51&mar=8
M.C..
ClioSport Club Member
Too much money for a "fun" car
NorthloopCup
ClioSport Moderator
Yeah I agree mate. I can rebuild the jc5 with new parts around 5 times at the price of the bacci romano gear kit.
Have you worked out how you'll plumb in the Laminova yet?
I'm considering getting one for my R26 to help the oil warm up quicker.
I'm considering getting one for my R26 to help the oil warm up quicker.