How Much Boost With 10.5 Compression

More Answers On how much boost with 10.5 compression

With 10.5:1 compression can any boost be ran on pump gas?

I found a motor with 10.5:1 compression that runs 10lbs of boost for a decent deal. I know this would obviously blow up on 91 octane, but at a lower setting like 5-6lbs I was thinking I might be able to get away with it. My worry was that it would be so close a tune, that a hot day would make the thing detonate hah.

Boost with 10:5 to 1 compression | Ford Mustang Forums

Boost with 10:5 to 1 comp Okay so Anderson Ford lists 2 tuner kits the SI-trim (V3) and the Ti-Trim (v1). The anderson ford Si-trim kit lists 12-15lbs boost at 6,000 rpm. I know boost is nothing more than restriction so a well breathing engine or larger cubic inches makes less boost than a stocker…

10.5 compression on 7lbs of boost – Honda D Series Forum

NOw a nice 50 trim T3 turbo witha .48 ar exhaust housing should have the party started around 3000rpm’s on a d16 with 9:1 compression easilly. With even moderate boost levels of 10-12 psi 200whp with great mid range power is no problem. Now, if you want a tractor motor, maybe a JSRC is more up your alley. Save.

boost with 10.5:1 compression? – 60DegreeV6.com

How to make your pushrod engine more powerful.

Boost Compression Ratio Calculator – RB Racing-RSR

The more “overlap” your cams have, the lower your “actual” as opposed to your static compression ratio will be. To give you an idea of this, an 11.5:1 compression motor may have cranking presures of 165 psi whereas another 10:1 motor may show 190 psi. If the barn door is open the horses are going to get out.

10.5:1 Compression | Hot Rod Forum

4,018 Posts. #9 · Aug 10, 2005. Depends on the cam. With 10.5:1 cr, plan on using a cam with about 244 degrees at 0.050″ with 110 lobe seperation. Then you will need a 3000 rpm stall converter and a 4:11 gear. If you plan on a lower stall or a lower numeric gear then plan on using a smaller cam and less compression.

10.5 :1 compression ratio?? – DSMtuners.com

Jun 10, 2020And just FYI, if the CP 10.5 pistons you mentioned is their off the shelf kit, then those would be around 10.0 on DSM. And the CR is calculated as using a 1.0mm thickness gasket. So if you use a popular MLS, such as cometic .051″. the compression ratio would be around 9.8 on 85.00mm pistons.

Boost vs Compression: Benefits of High Boost & High Compression Ratios

Likewise a reduction in compression ratio from 11:1 to 7.0:1 should result in a 12.3-percent decrease in power. Believe it or not, high-compression engines of the late ’60s, with compression ratios up to 12.5:1, had higher thermal efficiencies than many of today’s engines. For the same size engine, the older engine would have been more fuel …

how much boost can i run with 10.1 compression – S-10 Forum

You could get away with mild boost numbers (8psi) for a while but its only a matter of time before you want more. Meth injection helps a lot as well. It’s all about keeping IAT’s down and push as much timing and fuel as you can. There’s one guy on this section that ran a stock 4.3 and remote mount with meth and FMIC.

high compression and boost – LS1

The reason you lower your compression ratio is because of the octane required to prevent detonation. If you tried to run a 10.5 to 1 motor on 20lbs of boost you’d have to run racing gas to prevent detonation. What happens is the inlet air temps will rise when you compress the air more. Thus intercoolers and methanol injection systems.

TVS2300, How much boost on 10.5 SCR? | LS1GTO Forums

With 93-pump gas, a TVS2300, a suitable blower-cam (ie, 216/228 116 LSA), longtubes, ported heads, and a forged shortblock (10.5:1 SCR), how much boost could be safely run on the street with -no- meth & assuming still ~18* max timing? (and a good tuner)

Is 10.5:1 compression ratio too much for a turbo?

You can even eliminate the intercooler with methanol because the EGT temp. is almost half as you would run with gasoline. You can get away with compression ranging from 10.1:1 – 11.1:1 with gasoline with the correct standalone and the right tuning, this will give u better power and quicker spool up with less boost. M.

What Octane Level should I need for 10.5 to 1 Compression?

Feb 5, 2022The good news is my 69 340 is 10:5 and with the modern cam it runs very well. however it runs a lot better if I add 3-4 gallons of 110 racing fuel in it! Well, Given the Price of Octane Boost ($20/can) maybe I should look into the cost of adding a few gallons of racing fuel instead. LOL 😉 Feb 5, 2022.

Compression Ratio with Boost Pressure

The compression ratio from the factory will be different for naturally aspirated engines and boosted engines. For example, a stock Honda S2000 has a compression ratio of 11.1:1, whereas a turbocharged Subaru Impreza WRX has a compression ratio of 8.0:1. There are numerous factors that affect the maximum allowable compression ratio. There is no …

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Compression Blower Boost Pressure (psi) Blower Boost Pressure (psi) Ratio 135789 10 11 12 15 6 6. … Max boost = Max boost under wide open throttle Engine CID Max RPM Max boost Max CFM Required 540 6000 7 1383.929. Title: Effective Compression Ratio Chart.xlsx Author: sdoucette Created Date: 1/31/2013 4:32:05 PM …

SuperCharged 351w with high comp. 10:5:1 – Ford Muscle Cars Tech Forum

Mustang90LX. I have a 351w with 10:5:1 comp and the motor can take up to a 150 shot of nos. And just picked up a procharger p1sc with. 6psi of boost. The motor is carbed and its a holley 750 4bbl with a holley red fuel pump. And the cam spec is 535 lift and dor is 230 at 50 with 112 degs. Now the engine makes 540 hp at the crank.

How much boost can you run with 10:1CR & 93 Octane?

It had 10.5:1 compression ratio running 16-17 psi and 18 degrees of timing. Mike Dezotell of Dez Racing said , “The efficient combustion chamber lets us get away with more compression, more ignition timing and more boost than the ported stock heads.” He said he could have made more but he wasn’t using the Snow Performance methanol injection kit.

Compression ratio and methanol, is more always better? – Don Terrill’s …

I would run the compression up just high enough to make the drivability acceptable with the cam you chose. If that’s 10, 13, 15:1, so be it (if you’re racing a methanol engine with a small enough cam to get good enough drivability on 10:1, you’re probably not a serious meth racer, and might not always run on methanol). Top. Barry Burch.

sbc increasing compression from 8.5-1 to 10.-1 – Don Terrill’s Speed-Talk

Location: Re: sbc increasing compression from 8.5-1 to 10.-1. Post. by Mrhp » Thu Apr 07, 2016 10:25 pm. I had read somewhere a point of compression was worth 20-40 horse all things being equal. I usually figure 20-30 myself. Now, if you have to retard your total timing not to detonate, you have lost your benefit.

LSx Compression with Boost? – Pro-Touring.com

The 10-10.5 compression LS1, LS2 & LS6 I feel comfortable with 11-13 PSI on forged pistons and 9-10 PSI with stock pistons. I would say that keeping it to at least a static compression of 9.5 to one would be best unless you are really going to shove a lot of boost through there.

can i boost high compression? | Modded Mustang Forums

4,464 Posts. #10 · Oct 12, 2009. Only show this user. Sure dude, high compression with boost will make gobs of power, but you can rule out filling up a the pump. Check out my forums for stuff on troubleshooting, tuning, etc. We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. :yes.

why cant i run 11:1 compression and 10lb of boost?

As others have said, boost effectively raises the compression ratio of the engine. The effective compression depends on static compression ratio (11:1), boost (10 psi), and altitude (google says Fort Worth has an alt of 653 ft). Using these numbers, your effective compression ratio is 18.35:1 !! I don’t care if god himself tunes your car, even …

Maximum Boost vs Compression Ratio – forumotion.com

The factory compression ratio of the pistons is 10.2:1 and a common aftermarket compression ratio for a boosted NSX engine is 9.5:1. The downward thrust of the piston that causes the crankshaft to rotate is affected by net combustion pressure, which is influenced by boost and compression ratio.

Effective Compression Ratio (ECR) Chart – OnAllCylinders

Let’s plug in our 10:1 compression engine with a psi of boost into this equation: ECR = [(8 psi / 14.7) +1] x 10. ECR = 15.4:1. This reveals our engine was running an effective compression ratio of over 15:1. That means that you could reasonably build a 14:1 compression ratio engine and run it on E85 and not expect problems with detonation …

Compression Ratio and Octane Ratings: What You Need to Know

To be more specific, a piston compresses the fuel and air mix in the combustion chamber of the engine. And the so-called compression ratio — and each engine has its own ratio — refers to just how much of that fuel and air combination the piston compresses. “In a four cylinder, 2-liter engine, each cylinder would have a 500 cc capacity,” says …

Compression Ratio Vs Boost – Forced Induction Performance – SAU Community

This is because the loss in thermodynamic efficiency from reduction in compression is would most likely be well offset by the extra charge in the cylinder from higher boost. How much more power it’ll make is anyones guess though. Have you messed around with a compression ratio estimator? Its intersting to see that the dynamic compression ratio …

Discussing Compression Ratio And Pump Gas Compatibility

Apr 22, 2021The standard recommendation for street engines running on pump gas has always been to shoot for a 9.0:1 to perhaps 9.5:1 compression ratio. This is in order for the engine to safely work with pump gas, which for much of the country, is limited to 91-octane. While 9:1 is a safe number, maximizing compression is a great way to increase power …

compression ratio, fuel and boost – Toymods

Also, the increase in cylinder pressure at the end of the compression stroke only goes up by ~20 psi (from 574 to 594 psia) with this increase in boost pressure. So summarizing the effects of increased temp and pressure at the end of the compression stroke for the two cases: Increased CR from 8.5 to 9.5: ΔT = ~63°F and ΔP = ~97 psi.

How much boost on 9.6:1 compression – Ford Mustang Forum

An N/A 9.6 CR allows you to run 87 octane fuel depending on the tune you get done. If you dont care going with 93 Octane fuel you can increase the CR to 10.5 : 1 but that’s not going to work with forced induction any more. 8.5 : 1 will be about the worst N/A appliction you could imagine!

10.5:1 Compression | Hot Rod Forum

4,018 Posts. #9 · Aug 10, 2005. Depends on the cam. With 10.5:1 cr, plan on using a cam with about 244 degrees at 0.050″ with 110 lobe seperation. Then you will need a 3000 rpm stall converter and a 4:11 gear. If you plan on a lower stall or a lower numeric gear then plan on using a smaller cam and less compression.