Track crew: What do you have in the top end?
#24
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,338
Total Cats: 573
I just like to do things to do things.
#25
[QUOTE=y8s;431826]I may do cams at some point... but it's mostly because it's a little awesome and is one more thing that will let me spin a few grand higher more safely. [QUOTE]
A fair number of the engines I deal with at work are shim under bucket (Cosworth BD, Cosworth DFV, BMW M12, Lotus Twincam) and they're without exception a PITA and time consuming to adjust shims on. I'd think twice about that mod unless you really need it.
A fair number of the engines I deal with at work are shim under bucket (Cosworth BD, Cosworth DFV, BMW M12, Lotus Twincam) and they're without exception a PITA and time consuming to adjust shims on. I'd think twice about that mod unless you really need it.
#30
Tour de Franzia
iTrader: (6)
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
actually rumor has it that you can take off more material on the early head and it will flow better than the 99. A friend of mine just dropped his head off at Endyne, so we'll know something soon.
#31
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,100
Total bullshit. Port height is like 50 degrees on the 94 head, 20-something on the 99 head. I remember seeing flowbench numbers of 175cfm for a stock 94 head, 205cfm for a fully ported 94 head, and 210cfm for a stock 99 head.
#35
Elite Member
Thread Starter
iTrader: (15)
Join Date: Sep 2007
Location: Incline Village, NV
Posts: 2,034
Total Cats: 5
Alright so it looks like their are a few different strength supertech springs avaliable for the miata. I assume that we would want the stiffest ones, but am unsure.
Any specific springs we should be looking at?
Specifically:
49lbs@36.80mm
74lbs @ 34.20mm
70lbs @ 33.50mm
56lbs @ 34.20mm
58lbs @ 34.10mm
Link:
BELFAB RACING PRODUCTS
Is there any place other than belfab that we can get miata specific supertech springs? I had a pretty bad experience with their rods and all around dealing with them.
Any specific springs we should be looking at?
Specifically:
49lbs@36.80mm
74lbs @ 34.20mm
70lbs @ 33.50mm
56lbs @ 34.20mm
58lbs @ 34.10mm
Link:
BELFAB RACING PRODUCTS
Is there any place other than belfab that we can get miata specific supertech springs? I had a pretty bad experience with their rods and all around dealing with them.
#38
Elite Member
iTrader: (15)
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,847
Total Cats: 27
From what I understand, heavier springs will excessively load the cam lobes and wear down the cams and lifters faster. You want enough spring load to keep the valves from floating at max RPM, with a little margin, and not more than that.