Hey all,

Have done a search and basically know what these claim to do in terms of benefit to the engine.

But didnt find much in the way of actual opinions from people who have fitted them over the standard equivalent.

SO, calling anyone who has one fitted - did you notice any difference? I imagine it would be almost unnoticeable? Worth the buy?

Thanks

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''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?

They are meant to stop or at least minimise heat soak from the engine to inlet manifold. The heat soak occurs if you are sat in traffic or just generally sat there with the engine running or even once your engine is turnt off as the engine starts to lose heat.

The only thing I have noticed is that when the inlet manifold is warm due to the engine soak it makes acceleration slightly sluggish due to the air passing through the manifold being at a warm to hot temperature.

However once you have driven 5 minutes down the road the heat off the manifold drops to outside air temp obviously due to air passing through it and around it.

Probably not worth it mate but try it for yourself. Let it heat soak and feel how warm it gets then go for a drive and check it and it will be cold

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Team Nile 6
Team: 40.2 MPG
5 x a 306 owner!
currently abusing type r's in a town near you ™
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness

Just thinking i might be getting one of those nice shiney powder coated inlet manifolds bolted on and so i guess it would make sense to fit one of these gaskets at the same time!

Mulling it over!

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''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?

wouldnt say mine felt any faster,but throttle response was much crisper when the engine got hot, especially after sitting in traffic.

They're only 20-odd quid, just do it and stop being a girl

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Bye bye Sundance Kid

once mine comes back from the machine shop i will be fitting one on the coupe

had one on the s16 and in conjuction with the other parts i fitted at the same time there was a noticable increase

Have to search for a second hand one
Don't think phil makes them any more

Was a user a whine back on the 406couoe forum that had some made

just a waste of money adding two paper gaskets

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Not sure that's right, else Pug would have put them there and benefited from the advertising of increased MPG figures you'd get from the better combustion. Broadly speaking having the injector further away from the combustion chamber gives the fuel more time to separate or "drop out" of the air flow and also more surface area to "cling" to on the inlet port.

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Ph1 306 GTi 6 | RX8 231 S1 | YBR 125 Cafe Racer | MT-03 660

It did. Definitely, I promise. The things an owner might do to a car in the aftermarket to "improve" the car are not necessarily in line with what the manufacturer aimed to achieve with the car as a mass-produced machine. Most owners buying a family hot-hatch new from the dealers in the 90s won't have wanted 18" wheels, stiffer & lower suspension, badgeless grills and a supercharged 400bhp engine, so Peugeot didn't build them one.

When it comes to fuel economy though, everyone wants to spend less on fuel. Perhaps it was not quite such a major issue in the 90s as it is now, but emissions and fuel consumption were definitely a high priority for manufacturers, and if they could have improved the burn efficiency (and thus fuel efficiency and/or performance) from doing something as simple as positioning the injectors 5mm further away from the valve, you can be damm sure they would have done!

By mass-produced standards the RFS engine is relatively bespoke in that it was primarily only fitted to 2 cars and it has a number of components (like the inlet manifold, which is relevant to my point) that aren't fitted to other engines in the same family, so the design work carried out on them is likely to have been a little more focussed and details like these will have been considered.

Not that I'm saying moving the injectors away 5mm by fitting a PTFE gasket is going to ruin the performance of your engine, of course. Given the angle at which teh injectors are seated, the difference in performance will likely be negligible, but the cooler air temps from not having a hot inlet manifold certainly will make a difference.

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Ph1 306 GTi 6 | RX8 231 S1 | YBR 125 Cafe Racer | MT-03 660

I'm with the knobby student. Peugeot WILL have thought about it. Ever since injection came onto the scene, people have been researching the optimal injector angle and distance from valve/port. I might be going out on a limb here, but I bet they spent that little extra time working this out.

Unless, of course, they just guessed with everything

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Red Rallye - Rolling "restoration"

Wishbone Polybushes available

I won't dispute the pro's and con's, but I do however think that Peugeot would have explored this option.

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Red Rallye - Rolling "restoration"

Wishbone Polybushes available

I have one and gave it to carl to instal it with the sc conversion. How many other sc'd 6 owners have one on their car as i remember reading that the intake plenum would not fit well when used with a PTFE gasket.
I'll have to wait and see what Carl comes up with otherwise i'll have to sell it on here.

My mapper asked me to remove it before my engine was mapped as said wouldn't make s**t all difference and most likely cause downtime on the rollers due to air leaks so it went in the bin....

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230 hp 2.1 16v XU 205 rallye on jenveys Project thread here
309 3dr K20 Type R