Cylinder head preparation - logbook Toyota Corolla 1997
There is a desire next year to screw the turbine in a more interesting way, well, I want to modify the cylinder head a little, and there are rollers with a slightly larger lift and a wider phase, for sane money.
Cylinder heads 4e / 5e are the same, not at all uncommon, they cost a penny, but here, in general, my comrades found in the garage :)
I decided to pick it up and start working on it, judging by the traces of the gasket, you can cut the intake and exhaust windows a little, I’ll add a photo after completion in detail, for now I just started cleaning it.
A brush and chemistry for Karcher, a couple of hours and the result on the eyes, there is not much left.
It sure looks disgusting!
But not everything is so sad :)
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Continued…
Here is such a brush bought for 140r makes it easier to clean the channels :)
How many goodies on the walls of the channels)))))
Further, I apologize for the quality of the photo, I only had a cell phone at hand.
The inlet channel, at the inlet, has such a side that is not cool in my opinion.
I think this part should look like this :)
When I finish the head, I will definitely re-photograph everything in normal quality.
R0JER
TD04L — in other words, from the Subaru Impreza vrh.
I don't think it would be very interesting :)
If it's very interesting, I'm waiting for a visit ;-D.
TD04L — in other words, from the Subaru Impreza vrh.
I don't think it would be very interesting :)
Igor, somehow you don’t read all the information, apparently what happens, i.e. not completely ...
Of course, normal shafts will give an earlier spool, but you can’t get the same as on a stock turbo, I’m 90% sure. Regarding the shafts, again I tell you there are shafts under the VVT, and there are without it, and this is due more to the wide phases, which the VVT ​​clutch will simply interfere with in this case. Honda has an inflow, and it is arranged completely differently, and has nothing to do with the phase shifter, although on the new i-vtec systems there is both a phase and a full-fledged inflow.
In fact, if it is possible to make shafts, they won’t make it worse, you just need to look at how safely you can increase the rise, and what phase to do at the same time.
R0JER
Igor, you can shafts and vvti, only for this you need to find these shafts in the finished version.
It makes no sense to turn the overlap on the stock shafts, for this they put normal shafts and only gears to them. I don’t see any reason to bother with this on a Yarvian motor at all, it can work with the cylinder head at most, there are worthy examples on Yarv motors, you know about them.
By the way, I found why :) ON the Honda k20a the Tomei shafts. In general, with non-stock shafts, there is a danger that the valves will meet with the pistons and there are two types of tomei shafts, with and without a VTI killer, which are more evil with a killer, which are simpler without, but this is a Honda vedb with a compression ratio of 11, and on a turbo Jarve is much less likely to meet. What do you say?
I know perfectly well, it’s just possible to do it :) Why not :) I just know that split gears are sold, but there is one for intake (more often), there are two for intake and exhaust (less often), so if the cash costs are small, why not not to do…
What about the revision of the cylinder head? In principle, visually, the cylinder head is very well done, in comparison with the TAZ it does not go to any, only everything is sooo small there. Again, comparing with RB20-25 de or det, there are also jambs visually in the channels, everything is very straight and smooth here, ONLY crumb valves. And most importantly, in Taza (namely, I read a lot of information on them), the cylinder head and the VALVE should be done at the same time, while good shafts for a turbo engine can give up to 20% increase in cylinder head stock. So I ask ... Again, they say that good shafts allow the turbo to spin up earlier ... I plan to put the turbo more in the summer of 100%. Here's a theory. Again, the + forces are fatter, but I want the pickup to be from about the same rpm.
Igor, you can shafts and vvti, only for this you need to find these shafts in the finished version.
It makes no sense to turn the overlap on the stock shafts, for this they put normal shafts and only gears to them. I don’t see any reason to bother with this on a Yarvian motor at all, it can work with the cylinder head at most, there are worthy examples on Yarv motors, you know about them.
In general, on the jarve of the valve, I told you MUCH less :)
Intake 25-26 mm, because. didn't film.
and the release is 22.5 mm and no more, I looked in the removed state :)
Why can't shafts + VVT? If they are slightly raised or the phase is expanded, or how is it done? To be honest, I don’t know much about shafts :)
And what about the split gear for the outlet? That is, slightly tighten the release in one direction or another, what will I get? In fact, today I looked at the exhaust shaft, you can easily do it, you just need to drill holes a little bit and it will turn out with a standard gear ... As far as I understand, you can do it a couple of degrees earlier? I heard that the turbo will spin up earlier.
Measure for the sake of interest, jarve graduations are 24 mm, these are crumbs. I'll measure more accurately again in the garage tomorrow, cool. really tiny, the vases are much larger.
And if to make under the order shafts? It seems inexpensive about 10 rubles, they weld on the old ones and make any profile. And what is the disadvantage of VVT shafts?
And with a sawn head and a turbine, will you set me up on emanage blue? And if there is only one graduation? And squander the head? And is it worth making a split gear on the exhaust shaft? Basically a lot of questions :)
Yes, by myself, but today I washed the head, and upon closer examination it turned out that it would not be necessary to cut very much. There are no shafts on the jarv, shafts are generally a rare occurrence under the wind, only on the levin and then the clutch is removed basically.
Much smaller than the valve, I think it looks so in the photo, in reality they are small :)
Jen, are you going to cut your head yourself? Are there ramparts on the jarv?
By the way, the valve is MUCH more solid than on Jarve.
Most likely, the atmosphere will come to me after the holidays.
I freeze and write. Well, the dynamics makes such rollers, they seem to drive normally.
Who spoke about the disadvantages?! Not on blue it is normal to tune to stock injectors, on large injectors and with ultimate sometimes you mess around for a couple of days.
I think if you want to bother with the shafts (although I don’t see much point in this), then you will have to remove the phase shifter from the intake.
inlet polishing is contraindicated, with the COP has not yet figured out whether to polish or not
blah, you have a car for every day, right? .. Then they washed down the light and polished all the channels.