cylinder head work
Discussion
There is very little discussion on here about uprating the Cologne engines, I believe the biggest "hold back" is the induction system design rather than the heads?
Think most people accept them for what they are, an almost unburstable good old "thumper" and if that's not enough they buy something with a V8
I would of thought if heads done, cam and ECU the power from the V6 would get the 198bhp mark ( Anyone on here done it? ) Cheaper if doing yourself if not then costly to do as I think a better cam is around £400 and then its a engine out job to have fitted. Heads £££? Then ECU and time mapping.
Anything is possible given time and money but as the old saying goes "There aint no replacement for displacement".
You might well be able to get V8 power and torque out of a V6 but (assuming normally aspirated) where in the rev range would it be and how driveable would the car be? On the Euro Tours the standard tune V6's have no trouble keeping up with and in many cases out-pacing the V8's. Especially as we have to stop for petrol so often
You might well be able to get V8 power and torque out of a V6 but (assuming normally aspirated) where in the rev range would it be and how driveable would the car be? On the Euro Tours the standard tune V6's have no trouble keeping up with and in many cases out-pacing the V8's. Especially as we have to stop for petrol so often
It is even more difficult with the 2.8 where firstly the exhaust breathing is worse and secondly the K Jetronic isnt quite as easy to retune for a greater demand. However Burton Tune have given me advice and some changes are being made to cam, valve springs, port matching, balancing etc to try to get a better power delivery (rather than major outright power gains) from the engine. That is when I get the time to complete the build of the new engine!
I learnt a lot from rallying about the improvements to be made in power delivery by very careful 'blueprinting' of an engine even when there were strict limits on the tuning mods than could be made. A 10% gain would be possible on most unmodified older engines. Clearly, on modern engines, where the components are more 'optimised' that sort of gain would not be achievable.
I learnt a lot from rallying about the improvements to be made in power delivery by very careful 'blueprinting' of an engine even when there were strict limits on the tuning mods than could be made. A 10% gain would be possible on most unmodified older engines. Clearly, on modern engines, where the components are more 'optimised' that sort of gain would not be achievable.
v8s4me said:
Phillpot's V6 has been Dyno'd at 185BHP and my V8S at 198BHP. How much do you think the extra 13BHP is worth? OK, the V8S probably has more torque at 218ft/lbs but again, what would be the price of getting that out of the V6?
Is the v8 power at the wheels. ? Shouldn't it be well over 200 if at the fly. I thought like 220 -230 ? Or were those TVR press figures.?Thanks
Damian s3
steve j said:
...My 6 sounds way better than an 8, loud with a gorgeous deep burble lol....
Help is available and colour coded to match your car v8s4me said:
The figures I quoted are at the rear wheels ie the only place it matters 
As an after thought, the one thing even a wonderful a 'S' V6 can never do is sound like a V8. Sorry chaps
...now there's a gauntlet through down Joe...As an after thought, the one thing even a wonderful a 'S' V6 can never do is sound like a V8. Sorry chaps
....but there are loads of v8s to chose from... Even those slow old Chims....but V6s are rarer (across all fast cars) and to make a V6 sound good takes a bit more style....and V6 cars do not live in fear of the torque...so we tend to go around corners faster....and I I proved years ago in a 1300cc Triumph Herald estate, speed on the straight is partly due to power, but mainly due to speed of exit......and not stopping for coffee regularly helps as well..
v8s4me said:
Help is available and colour coded to match your car
I have both, a 6 and an 8, 8 is good, 6 is pure bliss 
https://www.youtube.com/watch?v=7II4TCoUiUI
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