My Peugeot 306 Rallye project
Posted: April 2nd, 2010, 12:32 pm
Hi all,
I've been a member of the 306Gti6 forum for a few years now so some of you may know me or have seen my car. It was originally intended to be a fast road/trackday car, but inevitably the bug bit me and as the car became more focused and more acomplished on track I found myself wanting more performance, better braking, more grip etc etc. Things were developing nicely until I ran a big end bearing at a Castle Coombe Action Day last september. I was pretty down about the whole affair but plans for a straight swap with another used engine were soon shelved in favour of a complete 'ground up' rebuild with a new block and crank, forged rods, high comp pistons and some head work. GC are taking care of the head as I write this and I and a few knowledgeable friends have taken care of the bottom end rebuild. Along the way I have learned valuable lessons, chiefly a very important one about safe oil temperatures and the stupidity of using inferior grades of engine oil, looks like I was pushing my luck for quite some time before I destroyed my engine, so hopefully the new one will avoid a similar fate!
Spec list:
Suspension:
Gaz Gold coilovers with 450lbs springs front
Gaz adjustable dampers rear
30mm ARB
21mm Torsion Bars
Solid rear beam mounts
Roller bearing wishbone bushes
OMP strut brace
Seam welded subframe
Negative camber/castor spherical bearing topmounts
16" x 7" alloy wheels
R888 tyres
Body/Interior:
Fully stripped
Custom cages 10 point welded in cage
Sparco bucket seats
Sabelt 6 point harnesses
Engine/Transmission:
2025cc 16 valve XU10J$RS iron block
Ported head
Solid lifters
Competition double valve springs
Vernier pulleys
Rally cams (Piper)
Standard valves (Back ground by CG)
Longmans inlet manifold
Jenvey 45mm ITBs
90mm trumpets
Quick shift kit
Quaife ATB LSD
That little lot has taken me a while to save for, and it's still got a long way to go, but once it's all together it seems a little bit of a waste to just do the occasional trackday and after watching a friend compete recently in the Dunlop Motorsport News (DMN) championship, I'd like to get the car ready for competiton so I'll keep the page regularly updated with the progress. There is no chance of it bieng ready this season, but I'f I can get it done through the summer and get my ARDS test out of the way then a few rounds next year should be a strong possibility.
A look at the result of 'saving money' on oil...
Heres some of the damage to the crank...
This was taken seconds before two of my big end shells decided they would be better off stacked one on top of another...
This brought me to my current stage, faced with the prospect of building a new engine from scratch I decided I had better find out a little about whats involved...
Very good reads both of those. Lots of handy pictures for people like me. And with the lessons learned from reading and chatting to peole that know things, I set about building my first (And quite possibly last) engine. Owing to the fact I am petrified I'll have missed some vital measurement, I have done my best to check, everything.
With the block completed, I turned my attention to the head, I'm told these don't need much porting work as the throats are pretty big already, but there are some gains to be had, so I tidyed up all the casting marks and did my best to remove all of the sand cast surface finish from the ports. Once I had collected enough propper parts to finish the head, it was off to GC for some professional fettling...
I know the box is probably a little overkill, and writing 'Fragile' on the side issues a challenge to the transportation network, but I wanted it to get there and back safely.
One of the interior, not much to see really at the moment other than the cage...
And my latest aquisition, I'm looking forward to wiring that up.
Buretting the block to get the figures to use for calculating the CR, this gave me a headache, thanks for your help over the phone Mr. Croft
I've been a member of the 306Gti6 forum for a few years now so some of you may know me or have seen my car. It was originally intended to be a fast road/trackday car, but inevitably the bug bit me and as the car became more focused and more acomplished on track I found myself wanting more performance, better braking, more grip etc etc. Things were developing nicely until I ran a big end bearing at a Castle Coombe Action Day last september. I was pretty down about the whole affair but plans for a straight swap with another used engine were soon shelved in favour of a complete 'ground up' rebuild with a new block and crank, forged rods, high comp pistons and some head work. GC are taking care of the head as I write this and I and a few knowledgeable friends have taken care of the bottom end rebuild. Along the way I have learned valuable lessons, chiefly a very important one about safe oil temperatures and the stupidity of using inferior grades of engine oil, looks like I was pushing my luck for quite some time before I destroyed my engine, so hopefully the new one will avoid a similar fate!
Spec list:
Suspension:
Gaz Gold coilovers with 450lbs springs front
Gaz adjustable dampers rear
30mm ARB
21mm Torsion Bars
Solid rear beam mounts
Roller bearing wishbone bushes
OMP strut brace
Seam welded subframe
Negative camber/castor spherical bearing topmounts
16" x 7" alloy wheels
R888 tyres
Body/Interior:
Fully stripped
Custom cages 10 point welded in cage
Sparco bucket seats
Sabelt 6 point harnesses
Engine/Transmission:
2025cc 16 valve XU10J$RS iron block
Ported head
Solid lifters
Competition double valve springs
Vernier pulleys
Rally cams (Piper)
Standard valves (Back ground by CG)
Longmans inlet manifold
Jenvey 45mm ITBs
90mm trumpets
Quick shift kit
Quaife ATB LSD
That little lot has taken me a while to save for, and it's still got a long way to go, but once it's all together it seems a little bit of a waste to just do the occasional trackday and after watching a friend compete recently in the Dunlop Motorsport News (DMN) championship, I'd like to get the car ready for competiton so I'll keep the page regularly updated with the progress. There is no chance of it bieng ready this season, but I'f I can get it done through the summer and get my ARDS test out of the way then a few rounds next year should be a strong possibility.
A look at the result of 'saving money' on oil...
Heres some of the damage to the crank...
This was taken seconds before two of my big end shells decided they would be better off stacked one on top of another...
This brought me to my current stage, faced with the prospect of building a new engine from scratch I decided I had better find out a little about whats involved...
Very good reads both of those. Lots of handy pictures for people like me. And with the lessons learned from reading and chatting to peole that know things, I set about building my first (And quite possibly last) engine. Owing to the fact I am petrified I'll have missed some vital measurement, I have done my best to check, everything.
With the block completed, I turned my attention to the head, I'm told these don't need much porting work as the throats are pretty big already, but there are some gains to be had, so I tidyed up all the casting marks and did my best to remove all of the sand cast surface finish from the ports. Once I had collected enough propper parts to finish the head, it was off to GC for some professional fettling...
I know the box is probably a little overkill, and writing 'Fragile' on the side issues a challenge to the transportation network, but I wanted it to get there and back safely.
One of the interior, not much to see really at the moment other than the cage...
And my latest aquisition, I'm looking forward to wiring that up.
Buretting the block to get the figures to use for calculating the CR, this gave me a headache, thanks for your help over the phone Mr. Croft