Heatshield and GruppeM including cold air feed Development
Heatshield and GruppeM including cold air feed Development
Having put the car dyno last month, the GruppeM (which is an awesome piece of kit) does have one down side, it draw’s hot air into the engine, thus retarding the timing losing power.
On the dyno I was down around 15/20bhp due to the GruppeM heat soak
So, a few drastic measures have been taken. Im having the Aux radiator removed and having cold air intake added, to help cool air enter the GruppeM system.
But that’s not enough, I want to take it one stage further.
After walking the pits at Le Mans last weekend it gave me some inspiration.
I have made 2 heat shields. One is a small shield, its main task it too reflects the radiant heat from the exhaust manifold. The main heat shield is to block the ambient heat from the engine bay and to trap cool air entering the engine bay from the 4 air entry points.
Kit ordered from Demon tweaks, Some Nimbus heat shield (not good heat reflective properties), Gold and silver heat reflective tape, heat proof sealant and rubber edging.
Gold tape will reflect 80% of radiant heat up to 450c
Silver cool tape reflects up to 1000c radiant heat.
The 2 air inlets, above the headlight and the wing snorkel. The other 2 are the cold air feed and the snorkel above the grill.
The exhaust manifold, this is one of the main causes of heat that’s effecting the Air intake temp.
Now the first heat shield, this is to reflect radiant heat. I doubled the Nimbus heat shield to give it double effect.
In place (the bolts was a afterthought, to help secure both plates)
Next step, to make templates out of cardboard, this was quite time consuming.
Templates on the Nimbus plate, ready for cutting.
Templates being washed to get rid of the oil, this is to help bonding of the paste (and tape at a later stage).
..and this is one I made earlier. Note the hole for the 90mm cold air feed that will be added at a later date.
Note front of heat shield is bevelled, to help the air flow upwards
Shield in place, note the cooling tape used on coolant pipes and intake pipe.
Moving onto the GruppeM cooling. First things first, give it a bit of a clean, freeing it up from any grime and oil. (Note it helps being single doing this in the sink) lol.
Start the wrapping process, I run out of tape shortly after so had to order some more. It was the weekend, so had to wait a few days.
The finished product.
I took the car for a aspirated test drive for a good hour, and tested the engine bay temp. Unfortunately I don’t have a heat scanner, so just used the mark one hand. The gold reflective tape was warm and you could rest your hand on it, the Nimbus heat shield was hot and could not touch it. So, the next modification will be to put more wrap on the engine side of the shield. The reminder of the intake pipes was warm and not hot. So there you have it. It works.
Next stage is to have the Cold air feed and the manifold spacers added, I will report back at the end of the month when I have them fitted.
Thanks for reading.
On the dyno I was down around 15/20bhp due to the GruppeM heat soak
So, a few drastic measures have been taken. Im having the Aux radiator removed and having cold air intake added, to help cool air enter the GruppeM system.
But that’s not enough, I want to take it one stage further.
After walking the pits at Le Mans last weekend it gave me some inspiration.
I have made 2 heat shields. One is a small shield, its main task it too reflects the radiant heat from the exhaust manifold. The main heat shield is to block the ambient heat from the engine bay and to trap cool air entering the engine bay from the 4 air entry points.
Kit ordered from Demon tweaks, Some Nimbus heat shield (not good heat reflective properties), Gold and silver heat reflective tape, heat proof sealant and rubber edging.
Gold tape will reflect 80% of radiant heat up to 450c
Silver cool tape reflects up to 1000c radiant heat.
The 2 air inlets, above the headlight and the wing snorkel. The other 2 are the cold air feed and the snorkel above the grill.
The exhaust manifold, this is one of the main causes of heat that’s effecting the Air intake temp.
Now the first heat shield, this is to reflect radiant heat. I doubled the Nimbus heat shield to give it double effect.
In place (the bolts was a afterthought, to help secure both plates)
Next step, to make templates out of cardboard, this was quite time consuming.
Templates on the Nimbus plate, ready for cutting.
Templates being washed to get rid of the oil, this is to help bonding of the paste (and tape at a later stage).
..and this is one I made earlier. Note the hole for the 90mm cold air feed that will be added at a later date.
Note front of heat shield is bevelled, to help the air flow upwards
Shield in place, note the cooling tape used on coolant pipes and intake pipe.
Moving onto the GruppeM cooling. First things first, give it a bit of a clean, freeing it up from any grime and oil. (Note it helps being single doing this in the sink) lol.
Start the wrapping process, I run out of tape shortly after so had to order some more. It was the weekend, so had to wait a few days.
The finished product.
I took the car for a aspirated test drive for a good hour, and tested the engine bay temp. Unfortunately I don’t have a heat scanner, so just used the mark one hand. The gold reflective tape was warm and you could rest your hand on it, the Nimbus heat shield was hot and could not touch it. So, the next modification will be to put more wrap on the engine side of the shield. The reminder of the intake pipes was warm and not hot. So there you have it. It works.
Next stage is to have the Cold air feed and the manifold spacers added, I will report back at the end of the month when I have them fitted.
Thanks for reading.
Last edited by sonny on Sun Dec 02, 2012 9:52 pm, edited 2 times in total.
Money can't buy you love, but it can buy you a well sorted racecar
Re: Heatshield and GruppeM cooling
Good work there, Sonny. I have always wondered if the cold air feed could be routed into gruppem. I have succumbed to the modding bug and booked in to MRC on 4th July for cold air feed, gut pre-cats and remap (already have Milly non-res, non-valved). Want more noise and more power, but have chosen what I consider to be the best value way as my budget is limited. Carbon clean just adds too much to the cost and hoping mine not too bad as only got 30k on the clock. Will see what my base is on the dyno at MRC. I think I will want the induction sound of a gruppe m at some point so good to know i can route my cold air feed into it
Re: Heatshield and GruppeM cooling
Manifold spacers? Are they JHM?
Good DIY job BTW sonny. I always thouht CF was supposed to insulate cold air from engine ambient temps but obviously not as good as gold tape.
Good DIY job BTW sonny. I always thouht CF was supposed to insulate cold air from engine ambient temps but obviously not as good as gold tape.
Re: Heatshield and GruppeM cooling
Thanks for the comments guys.
Yes the JHM spacers. The CF is good, bu does get hot after a long drive, I am going balls out on this little project, more of a experiment really.
Phil, the CAF will go into the GruppeM, there will be a few inch gap to allow any water to fall out and not being sucked up.
Yes the JHM spacers. The CF is good, bu does get hot after a long drive, I am going balls out on this little project, more of a experiment really.
Phil, the CAF will go into the GruppeM, there will be a few inch gap to allow any water to fall out and not being sucked up.
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Re: Heatshield and GruppeM cooling
Your engine bay now reminds me of someone's teeth:
Gone to the dark side
Re: Heatshield and GruppeM cooling
sonny, how much in total was it to get the JHM specers to the UK in GBP Sterling?
Re: Heatshield and GruppeM cooling
Amazing work!
Re: Heatshield and GruppeM cooling
@Steve I knew someone would make the comment lol
@P_G Iv not ordered them yet, will let MRC deal with it as they are fitting them.
This is still very much trial and error, as I will see how durable the tape is, the silver seems more easy to work with than the gold. Im going to wrap the engine side of the heat shield in silver tape next and tape up the gap between the shield and the side of the engine bay
@P_G Iv not ordered them yet, will let MRC deal with it as they are fitting them.
This is still very much trial and error, as I will see how durable the tape is, the silver seems more easy to work with than the gold. Im going to wrap the engine side of the heat shield in silver tape next and tape up the gap between the shield and the side of the engine bay
Money can't buy you love, but it can buy you a well sorted racecar
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Re: Heatshield and GruppeM cooling
+1jegan wrote:Amazing work!
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2016 RS3
2018 VW Tiguan
2010 Smart fourtwo
Sold but never forgotten:
2014 RS4 Sepang Blue
2015 VW Golf-R
1995 Subaru Impreza Series McRae
2012 RS3 Sepang Blue
RS4 B7 Avant Daytona
2002 Renault Avantime V6
2006 2-door Impreza STi
2009 TT TDi Quattro
10 Subaru's inc 22B type UK
Renault Clio V6 MK2
Civic Type-R's Mk1, 2 and 3
Renault Spider, Lotus Exige MK1
Renault Clio 197, Renault Clio Williams MK1
205 GTi 1.6 & 1.9 Gutmann
Re: Heatshield and GruppeM cooling
Nice one Sonny,
How many cans of Fosters did you get through??
How many cans of Fosters did you get through??
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Current
2017 C7 Nardo RS6 Performance
Gone:
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B6 S4 Saloon Tip
B5 S4 Avant
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Fiat Uno Turbo
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Re: Heatshield and GruppeM cooling
Ha ha very funny.Steve_C wrote:Your engine bay now reminds me of someone's teeth:
Re: Heatshield and GruppeM cooling
Just the one mate, one has to stay sober when playing with sharp objectsShagga wrote:Nice one Sonny,
How many cans of Fosters did you get through??
Money can't buy you love, but it can buy you a well sorted racecar
Re: Heatshield and GruppeM cooling
Can you get still get pissed on Fosters.......
Re: Heatshield and GruppeM cooling
On two cans yes, still got a create left over from Le Mans.PaulRS4 wrote:Can you get still get pissed on Fosters.......
Money can't buy you love, but it can buy you a well sorted racecar
Re: Heatshield and GruppeM cooling
great write up Sonny, good stuff!
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