Larger CC C1J

[Brizza]

Anyone ever tried thinner liners/bigger pistons? any success?

[Woznaldo]

I would think that by going thinner you'd weaken the liners thus making them more prone to slitting at higher boost levels. A longer throw crank would be the other way to go.

I don't know about using steel liners but, they present there own problems and are really only for serious boost engines.

[SCHWARTZ]

there is a project going on at the moment was for making the head better but has a crank that gives it a longer throw
https://www.rtoc.org/boards/showthread.php?t=13635

[Brizza]

That really is interesting - many thanks!!

I was thinking of thinner liners, larger pistons, Metro valves, 27.5mm venturi carb rejetted to suit, if needed to get the longer throw crank was thinking of using a Fuego crank.

[Markey Mark (BD)]

That really is interesting - many thanks!!

I was thinking of thinner liners, larger pistons, Metro valves, 27.5mm venturi carb rejetted to suit, if needed to get the longer throw crank was thinking of using a Fuego crank.

Thinner liners are abit risky mate, you would be taking the flat edges very thin. The crank in the C1J build engine is out of a 1600cc lump avaliable in europe, can't remember which car it come from but Ilker supplied it so he'll know.

Why a 27.5mm venturi carb?

[Brizza]

If you could find out the crank details that would be great... 27.5mm venturi to reduce the bottleneck

[Tony Walker]

All that effort think you'd be better with an efi setup.

[Adam 005]

did they not stroke one of the 5 maxi engines back in the day

[i l k e r]

I have revealed the secrets of the longer throw crank many times over the years

Andy Cooke and Mart will remember, we even discussed this at a curry night years ago.

I will let M Faulks do the talking as he has the crank now and he has some mad ideas about the good old C1J

[BluntyR5GTT]

how much work has to go into fitting this longer throw crank

[Jimmy_GTT]

There was some Dacia made in Romania with 1.6 C engine.
It could be used to build a 1.6 GTT engine.
My friend is working on such a project here in Hungary.

[Brizza]

There was some Dacia made in Romania with 1.6 C engine.
It could be used to build a 1.6 GTT engine.
My friend is working on such a project here in Hungary.

If you come across any specs/pics can you post them please? I wasnt really thinking of going with a longer throw/crank but if its a more viable option then....

I'd rather stick with carb for simplicities sake

[5teve L]

If you could find out the crank details that would be great... 27.5mm venturi to reduce the bottleneck

The standard one has been proven fine up to 230bhp IIRC, anything over that & IMO you want to be looking at efi options to get the best out of the engine as I think the inlet manifold is the biggest restriction in the end.

[Lewis]

Fuego crank won't be of any use in a C series engine. Its from the Renault A series of engines ( I think )

The Maxi used 77mm bore and 82mm stroke crank to give 1527cc

Other options are available out there, 78mm bore liners/pistons etc best to have a nosy on the Mecaparts site as they stock a lot of this.
There should be a 84mm stroke crank available from Sven at RenaultPower forum, this gives 1565cc when used with a 77mm bore.

I think the crank Ilker sourced may be from a C2L engine. Although I'm not sure about the use of this in Europe, I think the C2L was only used in Renault 21 models in South America...

Here we go just had a nosy on google and copied this from wikipedia


C2L

An Argentinian developed only in Argentina, Colombia and Turkey, derived from the CxJ. 1565 cc. The major improvement was in the final value of torque (12.5 kg/m at 3000 rpm).
In Colombia is in the:

• 
  
  • 1989 Renault 21 RS
  • 1989 Renault 9 TXE
  • 1990 Renault Etoile TS (21 TS) Saloon and Estate (Break)
  • 1996 Renault 19 1600
  
  

In Argentina is in the:

• 
  
  • 1989 Renault 18 GTS
  • 1989 Renault 11 TXE, RL, RN
  • 1989 Renault 9 GTL/RL TXE, RN
  • 1991 Renault 12 GTL
  • 1993 Renault 19 RN
  • 1996 Renault 19 RL
  • 1996 Renault Express (C3L, monopoint injection version) RN
  • 1997 Renault 19 RE
  • 1997 Renault Clio I (C3L version)
  
  

In Turkey

• 
  
  • 1991 Renault 12 4 door sedan and break version
  
  

[Robbo]

if you wanted to increase cc and remove the carb restriction then wouldnt it be cheaper and easier to use the b18ft

[i l k e r]

I think the crank Ilker sourced may be from a C2L engine.

In Turkey

• 
  
  • 1991 Renault 12 4 door sedan and break version

yes, it's from a C2L engine.

that wiki info is full of bull**** btw, C2L was never used with any form of Renault 12.

It was used in R9 Fairway and R11 Rainbow in the 1990's.

[Mart]

Andy Cooke and Mart will remember, we even discussed this at a curry night years ago.

Good times my friend

[i l k e r]

Good times my friend

Indeed my friend

It was probably one of the biggest mistakes I made in my life, leaving the UK that is

[Mart]

Ironically, I feel the same...about still living in the UK that is

[Jimmy_GTT]

If you come across any specs/pics can you post them please? I wasnt really thinking of going with a longer throw/crank but if its a more viable option then....

I'd rather stick with carb for simplicities sake

Dacia engine type: 106.00 (standard C engine)
It is 1557ccm
Bore 77
Stroke 83,6

http://en.dacia-club.net/vehicle/dacia-1307-1309-321

[i l k e r]

Ironically, I feel the same...about still living in the UK that is

let's meet somewhere else then

New Zealand?

[Markey Mark (BD)]

If you could find out the crank details that would be great... 27.5mm venturi to reduce the bottleneck

You may remove the bottle neck but you'll also loose the venturi effect and then require larger main jet to compensate which in turn will cause it to run rich off boost.

To be honest your best off leaving the standard venturi in there or mentioned earlier go the EFI route if funds allow.

[Matt Cole]

Ironically, I feel the same...about still living in the UK that is

Armpit of Europe we are, and it seems Thatchers Legacy lives on!