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Twingo Adey's Twingo GT (F4R+T 2.0ltr engine swap)

Are the cam covers not matched to the head in the f4r? Or is it just a case of having them both decked flat and getting the cam carriers smooth?
cambelt covers, you wouldn't be swapping cam covers about without a line bore
 
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the original gearbox i ordered fell through, they contacted me to say it was tight to turn so refunded me the money, ive take a punt on another one which should be here this week hopefully.

I really want to get a JR5108 or 110 for the ratios but as renault put the serial numbers on a sticker most have fallen off...

JR5108.webpJR5110.webp
 
Adey Out of Idle curiosity is the 6500 limit the peak power figure, can you tell me where peak torque occurs, just trying to see how the spread would work, Funny how standard ratios have not really changed over the years except there is a tendency toward longer in the higher gears, probably due to increased torque throughout the range
For a proper Atmo those ratios are pants, it would be falling off the cam every change. I assume all these cars are Forced induction
I like looking through the numbers though, must be on the spectrum!!!!
 
peak torque is very low on the engine im using, probably 2500 to 3000 and yes its a turbo engine. I think they are dead by 6500 rpm but that would be a guess at the limit. Allowed me to see the rough max speed in each gear. I usually ask for the torque to be mapped in/delivered as flat as It can be or rising with the revs if possible to make the cars easier to drive. I mean a huge slug of torque 2500rpm make the car seem fast but no one wants to be fighting torque steer out of every low speed corner or sprint off the lights. Plus a slug of torque tends to break things.
 
don't suppose you have one with torque on too do you?
Yep!

scan_20140207-2-png.37
 
more top end flow? do they work well with the stock cams and stuff?
Exactly that Adey.
The 14T feels breathless at the top end. You are just revving it for revs sake.
The 15T runs lower boost, makes more power, I couldnt detect any later when it comes on power and smashes into the red line. All on a standard cam.
 
Exactly that Adey.
The 14T feels breathless at the top end. You are just revving it for revs sake.
The 15T runs lower boost, makes more power, I couldnt detect any later when it comes on power and smashes into the red line. All on a standard cam.

Good to know for the future (y) if I get it in and it all proves reliable enough ill probably want to change it a little more. Wouldn't necessarily want more power, just having it at higher revs could make it fun.
 
As Andy said 15t makes them pretty strong up top. Good upgrade, but you will defo need the ndo fitting if you want it to handle more power.
 
Honestly I'd be happy with near stock performance in this chassis. Ive had plenty of fun with sub 150 bhp in it, suddenly having another 75+bhp and 75+lbft of torque will make it a drive that requires some re learning. If I do end up wanting more in the future I'd have to go the whole hog and run an ND0 box with an lsd in it custom shafts and 350+beans. For now though, budget built it should be fine 👌🏻🤞🤞🤞
 
Today I received a message to say the gearbox has been dispatched so I removed the 225 sump and temp fitted a 172 sump. Fitted up perfectly as expected and will align the bottom half of the JR5 gearbox. That along with the flywheel and clutch will help me spot through to the block for the upper gearbox fixings (y) The sump I have has a little crack in it that will need a weld up at some point. Anyway a tiny bit of progress whilst I wait for the bulk of the parts which will allow me to check the fitment of the whole lot into the chassis.
 
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