Best Aftermarket Intake Manifold B-Series???
10-24-2007, 01:36 AM
#71
0.0 BAR
Join Date: Dec 2002
Posts: 0
Re: Best Aftermarket Intake Manifold B-Series???
You have itr cams and your peaking at 7500? There is something really wrong there. My brothers si with ctr cams and bolt ons was peaking at 8400 and was carrying to 9k I set the rev at 9400. On the manifold side I was running a stock b16a si usdm manifold I cleaned up with 62mm itr throttle body.
a bone stock b16a should peak at 8k from the factory and carry to 8500.
a bone stock b16a should peak at 8k from the factory and carry to 8500.
10-24-2007, 01:51 AM
#72
0.0 BAR
Join Date: Oct 2005
Posts: 0
Re: Best Aftermarket Intake Manifold B-Series???
Originally Posted by chris
You have itr cams and your peaking at 7500? There is something really wrong there. My brothers si with ctr cams and bolt ons was peaking at 8400 and was carrying to 9k I set the rev at 9400. On the manifold side I was running a stock b16a si usdm manifold I cleaned up with 62mm itr throttle body.
a bone stock b16a should peak at 8k from the factory and carry to 8500.
a bone stock b16a should peak at 8k from the factory and carry to 8500.
Nothing I have tried made the power carry like it typically does on a B series VTEC engine.
Both of our B17s exhibit he same puke and die torque up top.
I might actually try a bigger TB, but I still think that a lack of static compression is really hurting these engines.
Here's my setup:
B17A1 125.000 miles or so.
'97 spec ITR cams
Edelbrock 4-2-1 Pro-Flo header. The 2 piece one that they stopped producing
Greddy SP2 exhaust
Tuned on Crome free by me.
Cheap Egay CAI. It was free.
Everything else is literally bone stock.
The 17 has a factory static compression ratio of 9.7:1 I know that .3 CR really shouldn't make a difference, but...
The one thing that kind of concerns me is that the last compression check had cranking pressures around the 165 mark. The nominal cranking pressure brand new is supposed to be 184.
It kind of makes sense that the slightly larger cams will reduce the cranking pressure, even though this is on the primary and secondary lobes, but it still seems low when many people are talking about having cranking pressure in the 200-225 range.
10-24-2007, 10:21 AM
#73
0.0 BAR
Join Date: Jun 2007
Posts: 27
Re: Best Aftermarket Intake Manifold B-Series???
Originally Posted by snm95ls
Exactly why I am confused.
Nothing I have tried made the power carry like it typically does on a B series VTEC engine.
Both of our B17s exhibit he same puke and die torque up top.
I might actually try a bigger TB, but I still think that a lack of static compression is really hurting these engines.
Here's my setup:
B17A1 125.000 miles or so.
'97 spec ITR cams
Edelbrock 4-2-1 Pro-Flo header. The 2 piece one that they stopped producing
Greddy SP2 exhaust
Tuned on Crome free by me.
Cheap Egay CAI. It was free.
Everything else is literally bone stock.
The 17 has a factory static compression ratio of 9.7:1 I know that .3 CR really shouldn't make a difference, but...
The one thing that kind of concerns me is that the last compression check had cranking pressures around the 165 mark. The nominal cranking pressure brand new is supposed to be 184.
It kind of makes sense that the slightly larger cams will reduce the cranking pressure, even though this is on the primary and secondary lobes, but it still seems low when many people are talking about having cranking pressure in the 200-225 range.
Nothing I have tried made the power carry like it typically does on a B series VTEC engine.
Both of our B17s exhibit he same puke and die torque up top.
I might actually try a bigger TB, but I still think that a lack of static compression is really hurting these engines.
Here's my setup:
B17A1 125.000 miles or so.
'97 spec ITR cams
Edelbrock 4-2-1 Pro-Flo header. The 2 piece one that they stopped producing
Greddy SP2 exhaust
Tuned on Crome free by me.
Cheap Egay CAI. It was free.
Everything else is literally bone stock.
The 17 has a factory static compression ratio of 9.7:1 I know that .3 CR really shouldn't make a difference, but...
The one thing that kind of concerns me is that the last compression check had cranking pressures around the 165 mark. The nominal cranking pressure brand new is supposed to be 184.
It kind of makes sense that the slightly larger cams will reduce the cranking pressure, even though this is on the primary and secondary lobes, but it still seems low when many people are talking about having cranking pressure in the 200-225 range.
The other car/b17 in discussion is mine. I acutally looked at all the previous charts and they mimick the one nick posted earlier. even the ctr i have won't carry power out past 7500rpms. then again the car has been acting screwy with all kinds of tuning changes. however, the AEBS was removed and the P30 was installed and dynoed within about 1 week. The drivability and the torque increase was really amazing. We've been talking about larger TBs for a couple of weeks now, I seriously think we'll try it.
Also might not be a bad idea to throw the AEBS on your car nick and see how it reacts.
Current Setup
B17a1 - 60k
JDM ITR Header
2.5" exhaust - vibrant resonator, comptech muffler, high flow cat
P30 Intake Manifold
Short Ram Intake w/AEM Dry Flow Filter
Homemade Ground Kit - and btw i cleaned all the grounds within the last 8-9 months, and the only questionable wire in that bay is the negative battery terminal, which will be changed here really soon.
CTR Intake Cam
Tuned on Crome
AEM 5bolt Cam Gears currently set to +2\-1 if i remember right
It is probably due for a new set of spark plugs but we'll see how they look tonite.
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