Alpine head swap onto c1j engine block

[chipis]

Hello, has anyone done renault 5 alpine 1982 manufactured head swap with crossflow onto c1j engine? what kind of problems i can run into doing this kind of swap? Is it worth doing? :scratch:

[James5]

Andrew cooke done some time back and Danny aka dk developments is doing it aswell there is a thread by danny in the project section:agree:


DK's thread

http://www.rtoc.org/boards/showthread.php?t=3088

[Penfold aka The Dealer]

Didn't ashy also do it back in the day??

[James5]

Didn't ashy also do it back in the day??

Your right he did:agree:

[Logg]

There was this French dudes marvellous bit of engeering.

http://www.rtoc.org/boards/showthread.php?t=29329

[gtmatt]

Andrew did it with good results ,you have to machine a water pump bracket i did for scoff

[Tony Walker]

There was this French dudes marvellous bit of engeering.

http://www.rtoc.org/boards/showthread.php?t=29329

He makes it look so simple.... whats the answer with the camshaft?

[Logg]

He makes it look so simple.... whats the answer with the camshaft?

I think you use an alpine cam so you can run matching dizzy drive. but if your on coil packs I guess there would be no need unless there's a reason to use the alpine oil pump too. :confused:

[Ashy]

alpine cam runs the water pump so it needs one end machining off and a bearing fitting into the other end of the block!

[Logg]

That's just speculation.

Wish I knew more about all this as I feel valve size is what holds back the C1J the most after the carb and this would be a great solution.

[Tony Walker]

Whys the alpine cam needed? will the pushrods/followers on the gtt cam not line up with the apline rockers? or is the exhaust inlet lobes in a different position?

[Ashy]

That's just speculation.

.

:confused: what is?

[Ashy]

Whys the alpine cam needed? will the pushrods/followers on the gtt cam not line up with the apline rockers? or is the exhaust inlet lobes in a different position?

The position of the cam lobes are totally different.

[Logg]

:confused: what is?

My little comment before your explanation. :cartman:

[Logg]

So Ashy do you need to use a whole Block and head or cant things be built up in a GTT block? How did yours go in it short life?

[Ashy]

So Ashy do you need to use a whole Block and head or cant things be built up in a GTT block? How did yours go in it short life?

I used a gtt block, liners, crank... Gordini cam, pistons & rods, head and rockers etc.

Heres a gtt v's dini cam

http://www.rtoc.org/files/Technical%20Files/Gordini%20Pics/DCP01739.JPG

Mine went well right up until it set on fire :cry:

[Tony Walker]

What did you do with it then?

[Ashy]

What did you do with it then?

In what way mate?

Heres an old vid of it on youtube when I first got it running....

https://www.youtube.com/watch?v=YRkFMlrHkvU

[Tony Walker]

i mean the bits after the fire? sell/scrap?

[Ashy]

There wasn't much left, still got the cage :agree:

http://www.rtoc.org/files/Technical%20Files/Gordini%20Pics/side.jpg


Notice the roofs missing, the NOS tank blew it off when it exploded :eek:

[Tony Walker]

:( was the engine salvageable? or screwed :( Did you find what the cause of the fire was?

[chipis]

as i see there are one major issue with water pump, to relocate it. as well as custom intake and exhaust manifolds. what about the alpine head thicknes, will we get the same compression ratio as with stock c1j engine head?

[DaveL485]

There wasn't much left, still got the cage :agree:


Notice the roofs missing, the NOS tank blew it off when it exploded :eek:

Christ.... nobody hurt I hope?

[Ashy]

as i see there are one major issue with water pump, to relocate it. as well as custom intake and exhaust manifolds. what about the alpine head thicknes, will we get the same compression ratio as with stock c1j engine head?

Just use the dini pistons as they Are domed, using GTT pistons would drop the cr.

[Ashy]

Christ.... nobody hurt I hope?

Nah just my pride and wallet :cry:

[V Man]

There wasn't much left, still got the cage :agree:

http://www.rtoc.org/files/Technical%20Files/Gordini%20Pics/side.jpg


Notice the roofs missing, the NOS tank blew it off when it exploded :eek:

I can't believe you left the wings.. they could have been reused!
I've still got the block that was in that somewhere...totally barbecued:devil:

[Tony Walker]

Strange how the cage kept its shape while the other metal body melted.
Shape such a great project was lost :(

[Logg]

Strange how the cage kept its shape while the other metal body melted.
Shape such a great project was lost :(

I think that just shows how much stronger the cage is than the shell. :crap:

[Sparkie]

you'd need to put an oil drain at the back of the rocker cover to allow excess oil to drain away. - the gtt engine tilts back slightly, the gordini lump sits straight.

the c/r of the gordini is about 8.7:1 with the std domed pistons. - as Ashy said, using gtt ones drops the comp ratio considerably.

one thing to remember is you must fit the dizzy drive BEFORE fitting the head - the hole in the head is too small to fit it afterwards.

[Sparkie]

Whys the alpine cam needed? will the pushrods/followers on the gtt cam not line up with the apline rockers? or is the exhaust inlet lobes in a different position?


EI-EI-EI-EI = gordini/turbo2
EI-IE-EI-IE = r5 gt turbo

;)

[Logg]

EI-EI-EI-EI = gordini/turbo2
EI-IE-EI-IE = r5 gt turbo

;)

I had to read this twice thought it was an old McDonald joke at first. :ashamed:

Great info lads.

[Tony Walker]

Ei Ei O?

[DK DEVELOPMENTS]

Expect to spend plenty of money :eek: