Hi - do you think it is possible to get heatsoak retarded ignition when driving in normal road conditions? I’m not talking about when we’ve sat in traffic stationary for 10 mins, more like when we do repeated runs through the gears up to the rev limiter, up and down the box through country lanes.
I ask as I’m sure ive experienced it now as when my car is driven when quite cold there appears to be more shove. I’m not a pollock who thrashed it from cold but you can tell there is a bit more there via it just due to to the enrichment duelling aduring warmup maybe?
I thought all the Exige S owners were in denial of this thing called heatsoak
On track it’s noticeable from what I’ve seen but that’s being relentless with the engine, gearbox and brakes. You’d do well to replicate that behaviour on the road.
If you can see heat soke you are a much better man than me. Having driven my car on track quite a few times I can tell you that with my set up if there is any heat soke its so minimal I can’t feel it.
My “S” was often cutting back on power in normal driving , a stop at a roundabout for example would often “set it off”
the reduction was , I would say at least 35 %…
Am I right in thinking that a an OBD2 code reader can show if and by how much the ignition is being retarded? It may be the max amount that is had been retarded since the last reset though. If so I wonder if it would be possible to have realtime readout of the current ignition timing at a given rpm?
Could then be very usefull for those that have invested in chargecoolers or aftermarket intercoolers to see if its working out vs the standard setup.
technical and interesting though it is …
In my case the difference was so marked I can’t seriously believe it goes un noticed ?? Really have any “S” owners not felt this ?
Maybe I had an extreme case with a worn out std cooler ??
I know i,m biased … But i say that as a pre…requisit for ANY power upgrades …then without a forge …or Pro…alloy Charge cooler, your bucks are not well spent …
Even with no other changes at all you are missing out … Really you are …
I like jfk had heatsoak loads in normal driving conditions until i got the Forge. I got my exige S in around may 06 and by the time the summer had got hear i just used to think that it got really slow in summer conditions but did not know why as at this time it was not well known about the heatsoak. Thankfully companies like forge were already on to it , although I still dont know why lotus didnt just fit the bigger cup intercooler (like what forge one is based on) on all the standard S cars, maybe they just had loads of standard coolers to shift.
Quite possibly yes - I bet they order in batches of 500 or something so they just can’t stop using them even if there is a problem, unless safety is a concern.
Can I compare my observations of what I beleive I’ve experienced as heatsoak with you guys?
Car feels less rapid after the cam change at about 4.5k rpm but noticiably more sluggish when pulling through the 7k+ area.
Torque seems to be less when cruising in 6th doing 80 then flooring it - takes much longer to get to 100+
Problem seems to be worse at lower speeds but high RPM and load (ie backroad blasts at 20-60mph using 1st and 2nd gear a lot)
I don’t seem to have been stuck in traffic for any long periods of time so can’t really tell how this affects things.
Overall - it just feels like a lack of urgency, but after cruising at 95 for 5 mins without screaming the supercharger things seems to get better a bit.
As I write this it does sound more and more heatsoaky (word?).
Right - anyone do any deals on Forges or just pay the retail?
Its very easy to make alot better, all you need is a dremmel. See my thread, i’d find it myself but sat on my phone waiting for a boiler to leak. After that you can also add extra air, gav 21gg has already done this and i’ll be doing it in a week or two when i get time. I’ll post a thread on how i do it. The best mod by far has been the forge, speak to chris neils for a price. I dremmel’d mine and fitted the forge at the same time, car felt miles better straight away and was quicker without a doubt. All the forge cars with the cn’s 260 mod have dyno’d 10bhp higher than the stock ic cars.
[quote=itguy]Quite possibly yes - I bet they order in batches of 500 or something so they just can’t stop using them even if there is a problem, unless safety is a concern.
Can I compare my observations of what I beleive I’ve experienced as heatsoak with you guys?
Car feels less rapid after the cam change at about 4.5k rpm but noticiably more sluggish when pulling through the 7k+ area.
Torque seems to be less when cruising in 6th doing 80 then flooring it - takes much longer to get to 100+
Problem seems to be worse at lower speeds but high RPM and load (ie backroad blasts at 20-60mph using 1st and 2nd gear a lot)
I don’t seem to have been stuck in traffic for any long periods of time so can’t really tell how this affects things.
Overall - it just feels like a lack of urgency, but after cruising at 95 for 5 mins without screaming the supercharger things seems to get better a bit.
As I write this it does sound more and more heatsoaky (word?).
Right - anyone do any deals on Forges or just pay the retail?[/quote]
IT Guy I have an RLS Intercooler Really Light Stuff
and RLS tubes Really Light Stuff
for sale.
Have used them on my Exige S for 2 seasons of track days and very noticable reduction in power loss due to heat soak.
Only removed them as have uprated the engine to 255bhp at the wheels and racing in Lotus Cup Europe and have gone down the charge cooler route to ensure that with the extra power and stress the inlet temps stay down
Cost over $1500 new for intercooler and pipes (including import duties)
Looking for �400 for intercooler and pipes. If interested PM me and I will send you pics. Will also throw in free heat sheild with underside coated in gold reflective material
Two other things to note about increases in performance with a new cooler.
After a year or so of use, if you blow compressed air through the intercooler core from the engine bay, you get a surprising amount of dust, salt, pollen, grass, leaves, small children, etc out of the front of the roof scoop.
You will also find that the inside of the cooler core will get coated in oil from the breather. This makes a great insulator for all the hot air passing through it.
A new core doesn’t have either of these, so an instant increase in cooling is gained.
Nice point made there JDS… when I removed my old standard cooler there was oil present… Maybe this added to my problems as you suggest … My car was very prone to power loss and had covered 38,000 miles…
Is there any knowledge of the RLS intercooler over our side of the pond? Anyone else on here got one as well as JDS?
I’m interested as there is significant ping-pong on lotustalk about actually how good it is and when reading all of that I can only think that the Forge for sale over here has never had any bad press yet.
It is possible though that the Forge just hasn’t been scrutinised to the same degree or that there are RLS haters in the USA over exegerating issues
good old phones, just by the forge i would.