2LikesGT and Onroad engine dyno reports !
05-28-2016 | 01:04 PM
#16
So what are they doing different with the GT class engines? I know they use a different liner and crankshaft but what's different with the liner? I'm going to be changing my GT engine to either the new Mito 35GT or the OS 21XZ-GT when it comes out. In the past I've always run the extra short or double-bend headers because I've gotten better top end with them. Should I be looking in another direction?
05-28-2016 | 03:04 PM
#18
Tech Addict
Joined: Jan 2010
Posts: 528
From: Hong Kong
So what are they doing different with the GT class engines? I know they use a different liner and crankshaft but what's different with the liner? I'm going to be changing my GT engine to either the new Mito 35GT or the OS 21XZ-GT when it comes out. In the past I've always run the extra short or double-bend headers because I've gotten better top end with them. Should I be looking in another direction?
06-23-2016 | 07:10 AM
#20
Basically a few things
1. 9886 outperforms every single modern EFFRA approved pipe, more torque and more HP then every single one of them ....I have been testing everything I can get my hands on and with both onroad and offorad applications the 9886 makes more power then everything....So if in doubt just use a 9886 and tailor the manifold length to the engine, you will have more power and torque then any other combo you can buy from any of the manufactures bar none..This is universal on all engines too...not just Nova
2. Its all about the manifold !!!! matching the manifold length to the engine is critical... Basically sticking a offroad manifold onto a onroad engine kills its power..in a GT car with a offroad manifold you should not run onroad engines as the power will be down compared to a higher timed offroad engine with the same manifold... For a onroad engine to make its proper power and powerband it needs an onroad manifold........IMO this sort of makes some of GT engine rules arbitrary ..... one of my simple modified $300 offroad engines would decimate every single high end Onroad engine money can buy as long as they are both on a offroad manifold....swap to the onroad manifolds and of course it all changes !!!
1. 9886 outperforms every single modern EFFRA approved pipe, more torque and more HP then every single one of them ....I have been testing everything I can get my hands on and with both onroad and offorad applications the 9886 makes more power then everything....So if in doubt just use a 9886 and tailor the manifold length to the engine, you will have more power and torque then any other combo you can buy from any of the manufactures bar none..This is universal on all engines too...not just Nova
2. Its all about the manifold !!!! matching the manifold length to the engine is critical... Basically sticking a offroad manifold onto a onroad engine kills its power..in a GT car with a offroad manifold you should not run onroad engines as the power will be down compared to a higher timed offroad engine with the same manifold... For a onroad engine to make its proper power and powerband it needs an onroad manifold........IMO this sort of makes some of GT engine rules arbitrary ..... one of my simple modified $300 offroad engines would decimate every single high end Onroad engine money can buy as long as they are both on a offroad manifold....swap to the onroad manifolds and of course it all changes !!!
06-23-2016 | 07:33 AM
#21
Tech Lord
Joined: Aug 2007
Posts: 14,044
From: Holland
The best onroad pipe is the 2013 but saddly it is forbidden to use...
Lots of torque. OK no top RPM but with a larger gearing high speeds are possibe. But most important on my Novarossi engines 30 to 45 secconds more milage!
Lots of torque. OK no top RPM but with a larger gearing high speeds are possibe. But most important on my Novarossi engines 30 to 45 secconds more milage!
06-23-2016 | 07:41 AM
#22
Basically a few things
1. 9886 outperforms every single modern EFFRA approved pipe, more torque and more HP then every single one of them ....I have been testing everything I can get my hands on and with both onroad and offorad applications the 9886 makes more power then everything....So if in doubt just use a 9886 and tailor the manifold length to the engine, you will have more power and torque then any other combo you can buy from any of the manufactures bar none..This is universal on all engines too...not just Nova
2. Its all about the manifold !!!! matching the manifold length to the engine is critical... Basically sticking a offroad manifold onto a onroad engine kills its power..in a GT car with a offroad manifold you should not run onroad engines as the power will be down compared to a higher timed offroad engine with the same manifold... For a onroad engine to make its proper power and powerband it needs an onroad manifold........IMO this sort of makes some of GT engine rules arbitrary ..... one of my simple modified $300 offroad engines would decimate every single high end Onroad engine money can buy as long as they are both on a offroad manifold....swap to the onroad manifolds and of course it all changes !!!
1. 9886 outperforms every single modern EFFRA approved pipe, more torque and more HP then every single one of them ....I have been testing everything I can get my hands on and with both onroad and offorad applications the 9886 makes more power then everything....So if in doubt just use a 9886 and tailor the manifold length to the engine, you will have more power and torque then any other combo you can buy from any of the manufactures bar none..This is universal on all engines too...not just Nova
2. Its all about the manifold !!!! matching the manifold length to the engine is critical... Basically sticking a offroad manifold onto a onroad engine kills its power..in a GT car with a offroad manifold you should not run onroad engines as the power will be down compared to a higher timed offroad engine with the same manifold... For a onroad engine to make its proper power and powerband it needs an onroad manifold........IMO this sort of makes some of GT engine rules arbitrary ..... one of my simple modified $300 offroad engines would decimate every single high end Onroad engine money can buy as long as they are both on a offroad manifold....swap to the onroad manifolds and of course it all changes !!!
06-23-2016 | 08:01 AM
#23
Interesting. I was under the impression that the 9886 was just a reinforced 2015 for offroad use. Something definitely different between them with the results you're seeing. Sure wish they would get rid of the 7mm venturi rule. That would really open things up and let the GT class "fly".
06-23-2016 | 10:11 AM
#24
I have the 2013 here.... I will test it on the onroad manifolds and see what I find.... I should retest it on the Nova offroad manifolds as well, as on the factory curved Werks offroad manifold it doesn't make the same juice as a 9886 does....
06-23-2016 | 01:16 PM
#25
Tech Lord
Joined: Aug 2007
Posts: 14,044
From: Holland
My JP R09 on a 2015 pipe was hardly reaching 5 minutes, with the 2013 I could reach 5:30. On the worlds in Cordoba it did save met a pitstop in the qualify and finals. Normally the 2nd geat is 20/46, I was running 20/45
06-28-2016 | 11:59 AM
#27
There is no real power difference as far as I can see, however there is a definite difference in how quickly the tune stabilizes, the offroad carbs need a longer warmup for the tune to set
06-28-2016 | 12:53 PM
#28
Tech Regular
Joined: Jan 2013
Posts: 434
anybody on here has some experience with the WERKS engine line in the GT class? I have been using both the B6 and B5 on my MGT7, so far, I am favoring the B5 because of the higher torque, but need to test on a high speed track...
07-02-2016 | 12:02 AM
#29
So, for GT, you would suggest a cheaper offroad motor that is modified with a bit higher timing, than an onroad style GT motor. And of course the 9886 pipe. Looking at all the 5 port GT motors that are made specifically for GT, they all have higher Power Bands in RPM. I guess this would be good for flowing tracks compared to break and gas. Biggest thing for GT is heavier car. I want more bottom end but still have good top end for the straight away in second gear. So, you think you can make an Elite5 into a powerhouse GT motor with 032/9886 combo? Or is the new stock MITO 35GT 5 port better? ROAR kills me with the 5 port 7mm restrictor limitation.
Last edited by invrtd; 07-02-2016 at 12:55 AM.
