If you were to make an undertray that went under your engine, it would act slightly as a bash guard and also be really good at stopping loose hoses catching on things in scenario #2.
Also undertrays can have noteworthy aerodynamic benefits in handling and cooling if you do them right.
Search found 546 matches
- Mon Apr 15, 2024 4:45 am
- Forum: Engine Tech
- Topic: Dry Sump Scavenge Plumbing
- Replies: 9
- Views: 425
- Mon Apr 15, 2024 4:39 am
- Forum: Engine Tech
- Topic: Resonator placement
- Replies: 21
- Views: 805
Re: Resonator placement
I've heard an X or H pipe can dramatically alter drone frequency.
Plus, sounds more racecar
Alternatively if it's one specific frequency, quarter wave resonator or "j pipe" can cancel out a narrow frequency range pretty well.
Plus, sounds more racecar
Alternatively if it's one specific frequency, quarter wave resonator or "j pipe" can cancel out a narrow frequency range pretty well.
- Fri Apr 12, 2024 4:38 am
- Forum: Engine Tech
- Topic: windsor torino build ideas?
- Replies: 19
- Views: 892
Re: windsor torino build ideas?
If you've got header choice, small diameter tri-y with a 2" final choke maximum. Expand it after that to whatever, but you can fit 400hp through a pair of 2" chokes without restriction unless you've really messed up before that (by starting too big, usually)… and even if it *was* restricti...
- Wed Apr 10, 2024 8:06 pm
- Forum: Engine Tech
- Topic: Highest power exhaust for GSX-R750 L1 2011-2023?
- Replies: 116
- Views: 480173
Re: Highest power exhaust for GSX-R750 L1 2011-2023?
Water pump flow is variable if there's a thermostat, so it can't really be used that way unless you know it's open all the time. If you have relatively constant temp coming out it's probably varying flow. So without some kind of flow meter it's going to be difficult to estimate. Can you measure *pre...
- Sun Apr 07, 2024 11:35 pm
- Forum: Engine Tech
- Topic: Datsun R 16 head porting advice?
- Replies: 29
- Views: 3268
Re: Datsun R 16 head porting advice?
Well that exhaust floor is going to have approximately zero flow on it, ever... Is there anything you can do in the chamber to encourage flow to enter on the long side? With that kind of port it looks like anything you try make enter the short side will disrupt flow. Suppose you could test this on t...
- Thu Apr 04, 2024 12:09 am
- Forum: Engine Tech
- Topic: Sanity Check On My Build
- Replies: 18
- Views: 1294
Re: Sanity Check On My Build
The 8-4-1 doesn't necessarily need to take up "bundle of snakes" kind of room, around the engine at least. Unfortunately the total length still ends up being fairly long so you'd need to run a sim to see how bad or if it's actually out of tune. If I was building an exhaust for mid-range an...
- Mon Apr 01, 2024 9:28 pm
- Forum: Engine Tech
- Topic: When does custom porting become beneficial?
- Replies: 60
- Views: 2935
Re: When does custom porting become beneficial?
I have read that thread and I agree, they are excellent heads for many different engine needs. There is one thing about those heads I do not like, and its the water jackets in the heads arent very big. This can be a good thing to a porter who wants more area to create volume or a specific shape, bu...
- Mon Apr 01, 2024 4:33 am
- Forum: Engine Tech
- Topic: Sanity Check On My Build
- Replies: 18
- Views: 1294
Re: Sanity Check On My Build
I'm inclined to go for EFI. You'll need it to make it clean and drivable, and "more big" doesn't necessarily mean "more pig" when you don't have booster venturis or manifold wet flow to worry about. A sequential port EFI with modern well-atomising injectors will go a long way in ...
- Sat Mar 30, 2024 7:30 am
- Forum: Engine Tech
- Topic: Datsun R 16 head porting advice?
- Replies: 29
- Views: 3268
Re: Datsun R 16 head porting advice?
"If you are only relieving it 1-2mm but going deep you're creating a fairly large amount of crevice volume beside the piston that won't burn easily. " Had not considered the crevice volume and potential problems. Actually I was thinking of just grinding it at about a 45* angle, and 3 - 4 ...
- Thu Mar 28, 2024 10:40 pm
- Forum: Engine Tech
- Topic: Datsun R 16 head porting advice?
- Replies: 29
- Views: 3268
Re: Datsun R 16 head porting advice?
Relieving the block to match the combustion chamber has other implications. If you are only relieving it 1-2mm but going deep you're creating a fairly large amount of crevice volume beside the piston that won't burn easily. That's part of the recipe for detonation if there's fuel or oil in there. Do...
- Thu Mar 21, 2024 4:56 am
- Forum: Engine Tech
- Topic: Summit CT-101 / Elgin 1091p
- Replies: 32
- Views: 1716
Re: Summit CT-101 / Elgin 1091p
What are your headers? Some different choices there could also get you better mid-range
- Mon Mar 18, 2024 8:03 am
- Forum: Engine Tech
- Topic: Narrowing rods?
- Replies: 9
- Views: 872
Re: Narrowing rods?
Is it worth considering those piston squirter grooves (the ones that are effectively directional big end draining) at this point?
- Sun Mar 17, 2024 10:13 am
- Forum: Engine Tech
- Topic: AFR O2 Sensor Location: Best Practice
- Replies: 9
- Views: 517
Re: AFR O2 Sensor Location: Best Practice
Sensor Placement Sensor operating temperature should be attained in 20 to 30 seconds when the control unit is attached to a 12 Volts (and up to 19.5 volt) supply. A longer warm up phase indicates either a problem with the sensor, the controller, or where the sensor is positioned. Controllers have i...
- Fri Mar 15, 2024 12:03 am
- Forum: Engine Tech
- Topic: Pushing the limits of a BMC A series head - max effort circuit race
- Replies: 17
- Views: 1045
Re: Pushing the limits of a BMC A series head - max effort circuit race
Cool! I was hoping something relevant to grandad's Morris 1000 was going to show up :p Got a few questions: How big are those exhaust ports? And how does that relate to stock size? What header do you plan on using? Is that combustion chamber shape better for combustion or was it mainly about flow? A...
- Mon Mar 04, 2024 12:35 am
- Forum: Engine Tech
- Topic: What ll this make? Rammed 496 bbc
- Replies: 73
- Views: 20997
Re: What ll this make? Rammed 496 bbc
About those headers, is there a reason to *not* have a merge collector and choke/cone?