1jz vvti head porting

Login or Sign Up. Logging in Remember me. Log in. Forgot password or user name? Posts Latest Posts. Page of Filtered by:. Previous 1 2 3 4 5 6 7 12 32 template Next. Some more info. Some conclusions empirically were that a large protruding ridge like a prolapsed arsehole around the runner was largely beneficial. Comment Post Cancel. GT-R LM. Teh GTR can neva loose. The less work it takes to evacuate the cylinder the better- remember it is pushing against the turbine so it probably does need as much help as it can get.

The other gain is that the cylinder ends up more thoroughly emptied so the charge is less polluted, and I guess pumping losses are minimised. I'm of the school of thought that says it doesn't matter as much. Put it this way, you bung a blower on a and you can get double the power easily, that's pretty good.

I am sure porting wil help and it would be more efficient but in my experience that costs real money so doesn't get done as a priority :D VERY interested to see before and after stuff TK. Muz, how much is it worth to convert to big single, aftermarket ecu, supporting fuel system, exhaust etc etc?

Would you consider doing a 1jz head? I have a apexi power fc and getting jun cams, cam gears and crower valve springs and titanium retainers soon.Click to Enlarge. Not Required Yes! Send to a Friend. We know our customers need to save a little extra whenever possible, so we have introduced our "Make an Offer" feature! Here is how it works.

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Product Description. To port or not to port, to increase valve size or not to increase valve size, 3 angle or 5 angle valve job? These are the questions any person entering the world of a reworked head ask, especially 2JZGTE owners. You cannot define every possibility in a single description or for all applications, but 'generally' speaking, what we provide with our Street Cylinder Head Refresh package is great for up to 8,RPM more RPM with proper optional valve train with those who have either stock cams or higher lift cams, and either a very high flowing set or highly boosted factory twin turbos, or a single turbo conversion.

In reality, both will benefit! You simply do not gain enough volumetric efficiency by hogging out a ton of metal in the 2JZ head, unless you are running a very high lift cam greater than.


If you are running degree cams or larger, then you can make some modest gains with a full port, otherwise there is no need to dig deep. The same pretty much holds true for oversized valves.

Our recommendation for the 2JZGTE cylinder head is to run stock sized valves at pretty much at all power levels. You can run a good set of factory valves proven to run at 7, RPM without any issues! A good aftermarket stainless steel stock sized valve is the natural upgrade, with an inconel based exhaust valve if you are running a very large turbo or making LOTS of heat launch control, anti-lag often, 2-stepping, etc.

We can set you up with cams and valve spring upgrades as well, so feel free to ask at your convenience on anything you need to know, as we are happy to help!


The most effective gains on anyone runningor GSC Stage 1 or 2 cams comes from pocket porting, and we've been doing it for years. What exactly is 'pocket porting? It's quick, it's reasonably simple to do for someone who has done many and the gains in cubic feet per minute flow CFM are a great value.

This will work well for stock cam, but really starts to shine with higher lift and duration cams! If you're changing cams, it's best you do a valve spring upgrade at the same time, even if you are using only a mild lift cam likeTMS Stage 1, GSC Stage 1. Both GSC and us recommend a valve spring change out when swapping cams if you have more than 50, miles on your motor.

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Your valve springs have a memory effect, which limits increased travel range efficiency associated with higher lift cams and can bind or break. If you never go over 7, RPM, then the stock springs should be ok. Please go ahead and email or ask our staff for cam and valve spring packages and recommendations!By Guest shiftdrift, October 1, in Green Hell.

That's fucking funny. Imagine the vvti as an adjustable cam gear you can use while running. It doesn't change the VE of the motor itself so I say go for it.

I mean the same rules apply as any other head and I'm sure I don't need to explain that part. I know a guy that's really experienced at porting and has done many 2j heads. I can ask him for some pointers.

I usually just smooth the ports and open them up for the first 10mm or so if they dont match the gasket. And I also clean off and sharp edges in the combustion chamber. I also would like to see how to port a head on a regular lathe.

Also port matching isn't done overly to increase flow, its to increase the harmonic equalization of it, mainly on high horsepower builds. If you go beyond the line of the gasket you will have gasket failure and have leaks.

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So is it really worth it to go to all of that trouble to have your ports matched, when you can just up the fuel and boost pressure? You'd also think that said shop would also know that VVTI has nothing to do with airflow, but is only triggered by rpm. Yeah thanks. Like I said I've never messed with vvti, I didn't know if the head design was more beneficial to the vvti as is.

I'll snap some pics of previous port jobs at work tomorrow.

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I don't plan on altering it a lot, just opening up the exhaust and smoothing the intake mostly. The ones i've done have been. I'll ask him, I definitely don't have very much machining experience. It looks like Neanderthal 7m is about to bend over skanky 1j and produce a whole offspring of head-gasket popping freak shows.

But then. You were also right about the graphs being pointless. While the intake ports are the same, the exhaust side of things is way different. I've always been curious what a 1j vvti head flows vs non vvti. Sorry I asked and he said mill cnc not lathe. I did however use the lathe today so I I at least won't confuse that again. I guess I should've thought of brake lathe Also, just got word we will be entering one of the craftsman trucks we have into the Wilmington mile.

Power plant is going to be a cobra jet with a super cobra crank, cr and some other goodies. Undecided on gearbox, either t56 or nascar 4 speed. Just a cheap build with stuff lying around. Never looked at a JZ head of any flavor, for any amount of time, so I don't know what the stock ports look like. So simple blending there will yeild the best results, and taking out any noticeable casting flaws.

Green Hell Search In. Prev 1 2 Next Page 1 of 2. Recommended Posts. Guest shiftdrift. Report post.I am updating the post. A few of the steps in your process can be shortened a little bit.

1jz vvti head porting

Thanks for the great info and for sharing all of your hard work. I have found a solution to this. First off your business page must have at least 1 review.

Assuming it does this has worked for me for a handful of sites. Open google and search for your business using the full address. When your business page appears on the right hand side, click on the view review button. When the review box opens copy the full URL and use this for your link. When opened by a PC it shows your reviews with a post review button at the top. When you view on a mobile ( I have checked Firefox and Chrome on android and Safari on an Iphone) the review box will open.

Above the posted reviews are the outlined 5 stars. The contents of this blog post may not work for everyone. When I get a little free time, I hope to find a better solution. If you find one before I do, please post it here. This is why I focus on Google reviews over reviews on any other website.

Google uses reviews as a ranking factor in search results (at least locally), yet makes it difficult for customers to review a business. It just reloads the same page. It sounds like you set your page up incorrectly at the beginning.

Your business does not have a physical address attached to it. If you want to get reviews, you must add your address to your business page. How do I add a physical address to my Google page. What is the link to your Google Business page.

I will take a lookYes, I have the same problem. I think the cool icons are the icons at the left-hand side such as review, directions, star, upload photo. My page only has share. The funny thing is I have another page that does have the icons, and the review box does pop up.

If I make a version of your link with my Google page (to go right to the review), NOTHING happens. You just get my page. I have been into Settings. Nice write up Travis, I was just figuring this out the other day after Google slammed Local and thus shut down our old approach. Unfortunately from what I can tell, going to your Google page thru google. For my business, I have a few dozen interactions with clients or potential clients on my absolute busiest days.

Will google not let them post because it would appear you are fishing for reviews. For those following this article, I have found a way to include a direct link for leaving a mobile review.

I am still working out a few of the details, but I hope to have it complete soon. I tried different links to Business Google pages, but this is HANDS DOWN the most direct and best method.

Why is Google so ignorant not to place these instructions in their help pages. Do you know of a fix for this.Mayweather vs McGregor predictions by Luca Fury. UFC 214 predictions by Luca Fury. Fury breaks down the main event and gives his Weidman vs Gastelum predictions. Read more 16 days ago 2638 by Luca Fury UFC Fight Night 122 predictions by Luca Fury.

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1jz vvti head porting

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We also predicted two disappointments for 2016: DS and Volkswagen. VW has launched 3 new nameplates in 2016: the Sportsvan has outsold its rival BMW 2-Series by almost 3-to-1, the Phideon is more of an image booster than a volume model at 800 monthly sales, but the C-Trek is the most promising with 5.

The American SUV brand could easily have been mentioned among our success stories of 2016, as it has sold well over 100. That puts the brand ahead of Cadillac, which did get a mention as one of the most successful brands in China last year.

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Absolutely, but not irrealistic. In its home market, Geely wants Volvo to become a full-blown rival to the German luxury brands Audi, BMW and Mercedes-Benz, but it has a long way to go in terms of volume. This strategy intended to give those local companies the opportunity to learn from their foreign partners and help to the technology to develop their own brands and models. The best examples of such troubled state-owned automakers are FAW, Chery and SAIC with its Maxus, MG and Roewe brands.

Lastly, Shanghai Automotive Industry Corporation has got Joint Ventures with the two largest manufacturers in China: Volkswagen and General Motors, but sales of its own brands Roewe, MG and Maxus were less than 300. These brands will continue to gain market share at home, at the cost of their competitors who can sit back and rake in the profits by producing cars for their overseas partners.

What are your predictions for 2017. Which brand or model do you expect to surprise or disappoint this year. Let me know in the comments below. His daily driver is an Alfa Romeo GT 3. You can find all his articles Here. In a few year China will be able to end the mandate for foreign automakers to form Joint Ventures with local manufacturers if they want to produce cars in China and avoid the high import duties.

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However, this will help you strengthen your bond with your colleagues. Put all your energies in doing something you love. The day is good for indulging in recreational activities or hobbies. However, refrain from over-spending. Few of you may meet someone special today. Monetary gain from an unexpected source is foreseen.

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1jz vvti head porting

BBC Sport football expert Mark Lawrenson says: "United flunked at Huddersfield and, as bad as Liverpool were at Wembley, Tottenham played very well to beat them 4-1.

They rolled over in the first half against the Terriers but there is no way Jose Mourinho is going to let Spurs beat his side at Old Trafford. Lawro scored 70 points in week nine, which saw him slip to 3,152nd place out of more than 240,000 users. Lawro, who beat Joe Root last week, takes on two of his England cricket team-mates for this weekend's fixtures - all-rounder Moeen Ali and bowler James Anderson.

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Last week, Lawro got four correct results, including one perfect scores, from 10 matches, for a total of 70 points. He beat England cricket captain Joe Root, who got five results correct but with no perfect scores, for a total of 50 points. For this day's fixtures we have 433 matches from 85 leagues. All Match time is in your local timezone()Premium will get you more wins. Plus, you get Corner stats and Card stats along with CSV.

1jz vvti head porting

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