Road Test of Manthey K400 GT3
Discussion
Hi Guys,
Decided on a GT3 - now the only question is whether to opt for a tuned Mk1 or std Mk2. Mk1 seems better value right now, but having driven a few I'd like a tad more power and (much) better braking...Mk2 is stretching it financially and I'm less sure of the residual values as they built so many more RHD models!
I'd like to compare performance stats for Manthey K400 GT3Mk1 and standard Mk2 (acceleration + in-gear times, behaviour on the road).
After a fruitless trawl through my (bookcase full of!) magazines...and a lengthy search on the 'net, I still can't find a road test/performance figures for a Manthey equipped GT3 Mk1. I saw on a previous thread that 911PW tested one - anyone know which issue (or have a PDF/scan of the test?)
Decided on a GT3 - now the only question is whether to opt for a tuned Mk1 or std Mk2. Mk1 seems better value right now, but having driven a few I'd like a tad more power and (much) better braking...Mk2 is stretching it financially and I'm less sure of the residual values as they built so many more RHD models!
I'd like to compare performance stats for Manthey K400 GT3Mk1 and standard Mk2 (acceleration + in-gear times, behaviour on the road).
After a fruitless trawl through my (bookcase full of!) magazines...and a lengthy search on the 'net, I still can't find a road test/performance figures for a Manthey equipped GT3 Mk1. I saw on a previous thread that 911PW tested one - anyone know which issue (or have a PDF/scan of the test?)
I've driven these:
- standard Mk I
- Manthey Mk I 390 bhp
- standard Mk II
- Manthey Mk II 415 bhp
- Manthey Mk II 440 bhp
and I would not want a non-Manthey for road or track use.
Personally I'd go for the Manthey Mk I over the standard Mk II any day. Of course, it's all personal preference and of course I can't offer the full journalists review.
- standard Mk I
- Manthey Mk I 390 bhp
- standard Mk II
- Manthey Mk II 415 bhp
- Manthey Mk II 440 bhp
and I would not want a non-Manthey for road or track use.
Personally I'd go for the Manthey Mk I over the standard Mk II any day. Of course, it's all personal preference and of course I can't offer the full journalists review.
Check the Manthey web site. There are a couple of reports on the cars (www.manthey-motors.de/mainframe.asp?lang=de&e1=165) they are in German but you should be able to understand the figures...
Also, it's worth noting that AmD in the UK get 400bhp out of the GT3s, normally aspirated. I am not sure how the price compares to Manthey, but at circar 3k (from memory) you could always get a 'normal' GT3 and get it to 400 bhp this way. Not knocking Olaf's crew at all, but they're not local and AmD could be another option if you want a 'special' GT3 
I have the Manthey K410 on mine,
I must say it's nice having the extra power on the road, but on track the differnece is not as noticable.
Most of the extra grunt comes in the lower rev range about 5-5.5k, here it is very noticable.
Up higher in the rev range, now i'm used to it, it is hard to remember what it was like originally.
If you are looking for track performance gains, then the suspension will make much more difference than the engine mods will.
G.
I must say it's nice having the extra power on the road, but on track the differnece is not as noticable.
Most of the extra grunt comes in the lower rev range about 5-5.5k, here it is very noticable.
Up higher in the rev range, now i'm used to it, it is hard to remember what it was like originally.
If you are looking for track performance gains, then the suspension will make much more difference than the engine mods will.
G.
Leaving aside the non-engine related work that Manthey do, re just the performance figures, I have a strong suspicion that standard Mk2's are pushing out well above the quoted figures.
Admittedly this is purely based on my following a 360 Challenge Stradale around a track. On the longest straight which is approx 100kph entry speed and approx 230kph at the braking zone, my standard Mk2 was neck and neck with the Stradale in "race" mode (to reduce the upshift time). I think that's pretty impressive.
Admittedly this is purely based on my following a 360 Challenge Stradale around a track. On the longest straight which is approx 100kph entry speed and approx 230kph at the braking zone, my standard Mk2 was neck and neck with the Stradale in "race" mode (to reduce the upshift time). I think that's pretty impressive.
GreigM said:
As for braking - remember the Mk2 brakes will not offer any better retardation than the Mk1s (i.e. you won't stop quicker) - just improved heat capacity.
Are you sure about that Greig ???
I thought i heard that the Pad surface area on the MKII was nearly twice the size of the MKI's ??
If so, sureley that would have some gain in stopping power in addition to the cooling ??
G.
Harris_I said:
Leaving aside the non-engine related work that Manthey do, re just the performance figures, I have a strong suspicion that standard Mk2's are pushing out well above the quoted figures.
Admittedly this is purely based on my following a 360 Challenge Stradale around a track. On the longest straight which is approx 100kph entry speed and approx 230kph at the braking zone, my standard Mk2 was neck and neck with the Stradale in "race" mode (to reduce the upshift time). I think that's pretty impressive.
Maybe the 360 was down on power?
Glenn McMenamin said:
GreigM said:
As for braking - remember the Mk2 brakes will not offer any better retardation than the Mk1s (i.e. you won't stop quicker) - just improved heat capacity.
Are you sure about that Greig ???
I thought i heard that the Pad surface area on the MKII was nearly twice the size of the MKI's ??
If so, sureley that would have some gain in stopping power in addition to the cooling ??
G.
Unless your brakes are woefully underspecced, then its all about the tyres. Bigger brakes are mostly to give resistance to fade + enhanced ability to modulate effectively. You can end up overspeccing brakes though which makes them super easy to lock up on road tyres - not that this is likely on a 911.
Thats why brake tests in magazines always have such a small spread, pretty much irrespective of the vehicle type.
>> Edited by DanH on Monday 18th April 15:07
drove a stradale on the weekend for the first time.pleasantly surprised.I think they've got it right if you like that sort of thing.still don't like the paddle shift and the noise was too intrusive not to mention the very flash looks (bright red with the stripe) but i liked it more than any other ferrari i'd driven.At twice the price of a decent mk 2 gt3 though you must be joking...
Shotokan,
if you find the issue of GTPP with the Orange 935 on the cover (about 12-18 months old), there is a test of my car. It is the Zanzibar Mk1 GT3CS, with the Manthey K400 and JRZ suspension. Dom seemed to like it, except he couldn't seem to get the rear out
In my experiance, with the K400 kit, there is no real world difference between my car and a Mk2/RS. As part of the Titanic mob, i have been up against many and never found here wanting. There are even a couple of guy's who will attest to it keeping ahead of Mr Cohen Audi RS blue 993 GT2 at Spa. they really are that good.
Regards,
Steve
if you find the issue of GTPP with the Orange 935 on the cover (about 12-18 months old), there is a test of my car. It is the Zanzibar Mk1 GT3CS, with the Manthey K400 and JRZ suspension. Dom seemed to like it, except he couldn't seem to get the rear out
In my experiance, with the K400 kit, there is no real world difference between my car and a Mk2/RS. As part of the Titanic mob, i have been up against many and never found here wanting. There are even a couple of guy's who will attest to it keeping ahead of Mr Cohen Audi RS blue 993 GT2 at Spa. they really are that good.
Regards,
Steve
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