Do I need uprated valve train??
#1
Do I need uprated valve train??
hi guys. I have a fully built sleeved block, GT30 shooting for 450-500hp. 8200 Rev limit.
Completely standard head. I know most will say it’s advisable to get uprated springs and retainers but is it really necessary?
Completely standard head. I know most will say it’s advisable to get uprated springs and retainers but is it really necessary?
#2
Honda-Tech Member
Re: Do I need uprated valve train??
It is mainly for risk mitigation. It is not necessary in order to meet your power goal for that RPM, but if planning to push things hard and often you will stress everything more than you would on a normal daily driver. Valve train upgrades will also help protect your investment in the bottom end should something decide to fail.
#3
Re: Do I need uprated valve train??
It is mainly for risk mitigation. It is not necessary in order to meet your power goal for that RPM, but if planning to push things hard and often you will stress everything more than you would on a normal daily driver. Valve train upgrades will also help protect your investment in the bottom end should something decide to fail.
#4
Honda-Tech Member
Re: Do I need uprated valve train??
B16 will need boost to reach 500 hp and boost presses the valve towards pistons more than N/A 8200 rpm.
#6
Moderator
iTrader: (14)
Re: Do I need uprated valve train??
Using an upgraded valvetrain is always a good idea for a turbocharged application, even if you're just using stock camshafts and a lower RPM limit. at 1.6bar, that's a decent amount of boost pressure to use on a GT30(76R) to warrant the use of aftermarket valvetrain. As a matter of utility, it will take more than 8200rpms in order to make 500hp to the wheels. (if you're looking at 500bhp, that will require less boost pressure to obtain that power level on a sleeved B18C4. )
If you're a true 2.0 litre, that means that not only did you bore out to at least 84mm, but you've also increased your stroke to at least 89mm. (FYI if you didn't, you're not a 2.0 litre. You're actually still 1.9 litres in total displacement)
There are several companies that one can use other than Supertech in order to fit the bill, but as a matter of precaution, yes 85lbs seat pressure is best to use for upgraded valvetrain for turbocharger applications, in the event that in the future you do upgrade camshafts, you'll avoid valve float. There is Ferrea, Crower, Skunk2 and even some traditional Japanese companies (depending upon where you are) like Buddy Club, Toda Racing Ltd, and Jun Auto Mechanic, to help you with some decisions.
If you're a true 2.0 litre, that means that not only did you bore out to at least 84mm, but you've also increased your stroke to at least 89mm. (FYI if you didn't, you're not a 2.0 litre. You're actually still 1.9 litres in total displacement)
There are several companies that one can use other than Supertech in order to fit the bill, but as a matter of precaution, yes 85lbs seat pressure is best to use for upgraded valvetrain for turbocharger applications, in the event that in the future you do upgrade camshafts, you'll avoid valve float. There is Ferrea, Crower, Skunk2 and even some traditional Japanese companies (depending upon where you are) like Buddy Club, Toda Racing Ltd, and Jun Auto Mechanic, to help you with some decisions.
#7
Re: Do I need uprated valve train??
Using an upgraded valvetrain is always a good idea for a turbocharged application, even if you're just using stock camshafts and a lower RPM limit. at 1.6bar, that's a decent amount of boost pressure to use on a GT30(76R) to warrant the use of aftermarket valvetrain. As a matter of utility, it will take more than 8200rpms in order to make 500hp to the wheels. (if you're looking at 500bhp, that will require less boost pressure to obtain that power level on a sleeved B18C4. )
If you're a true 2.0 litre, that means that not only did you bore out to at least 84mm, but you've also increased your stroke to at least 89mm. (FYI if you didn't, you're not a 2.0 litre. You're actually still 1.9 litres in total displacement)
There are several companies that one can use other than Supertech in order to fit the bill, but as a matter of precaution, yes 85lbs seat pressure is best to use for upgraded valvetrain for turbocharger applications, in the event that in the future you do upgrade camshafts, you'll avoid valve float. There is Ferrea, Crower, Skunk2 and even some traditional Japanese companies (depending upon where you are) like Buddy Club, Toda Racing Ltd, and Jun Auto Mechanic, to help you with some decisions.
If you're a true 2.0 litre, that means that not only did you bore out to at least 84mm, but you've also increased your stroke to at least 89mm. (FYI if you didn't, you're not a 2.0 litre. You're actually still 1.9 litres in total displacement)
There are several companies that one can use other than Supertech in order to fit the bill, but as a matter of precaution, yes 85lbs seat pressure is best to use for upgraded valvetrain for turbocharger applications, in the event that in the future you do upgrade camshafts, you'll avoid valve float. There is Ferrea, Crower, Skunk2 and even some traditional Japanese companies (depending upon where you are) like Buddy Club, Toda Racing Ltd, and Jun Auto Mechanic, to help you with some decisions.
Thanks,
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#8
Re: Do I need uprated valve train??
Also, can anyone confirm that all aftermarket springs work with all aftermarket retainers??
I have bought BLOX Ti retainers and want to buy the 85lb Supertech springs. Will they work with each other?
I have bought BLOX Ti retainers and want to buy the 85lb Supertech springs. Will they work with each other?
#9
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Re: Do I need uprated valve train??
The Supertech 85 lb springs and retainers is a great all round spring that can accept many of the larger profile aftermarket cams, as long as you stay below 9500rpm. I ran them up to 9200 rpm with no problems.
#11
Moderator
iTrader: (14)
Re: Do I need uprated valve train??
To answer your question, yes. Although you are using a very large turbo to make only 400whp (in which case the car will act like a light-switch for any control.. but that's another story) it can safely be done at 82mm. As a maximum bore. If you can still do 81.5mm bore, do so.
#12
Re: Do I need uprated valve train??
Leave that Blox alone. Stick with one company for both items. That way you can make sure that everything matches. don't get cheap on yourself by a couple of dollars to "see if they fit".
To answer your question, yes. Although you are using a very large turbo to make only 400whp (in which case the car will act like a light-switch for any control.. but that's another story) it can safely be done at 82mm. As a maximum bore. If you can still do 81.5mm bore, do so.
To answer your question, yes. Although you are using a very large turbo to make only 400whp (in which case the car will act like a light-switch for any control.. but that's another story) it can safely be done at 82mm. As a maximum bore. If you can still do 81.5mm bore, do so.
#14
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