I can ask Loynings...... The end goal is a reliable HPDE weekend / backroads "touge" racer; plenty mid-range power with a decent torque curve. And still be able to drive to work on Monday with no problems. above is why I recommend going with something a bit less challenging**.... maybe BC ...

So, this weekend I'm getting a bunch of Brian Crower 4age stuff in a trade deal. - 1.8L Stroker kit - 83mm stroke with 83mm 11:1 pistons (PN: BC0360) - Intake Valves - 32mm / +1.5mm (PN: BC3362) - Exhaust Valves - 27mm / +1mm (PN: BC3363) - Valve Guides (PN: BC3938/39) - Billet Keepers/Locks (PN: B...

So, this weekend I'm getting a bunch of Brian Crower 4age stuff in a trade deal. - 1.8L Stroker kit - 83mm stroke with 83mm 11:1 pistons (PN: BC0360) - Intake Valves - 32mm / +1.5mm (PN: BC3362) - Exhaust Valves - 27mm / +1mm (PN: BC3363) - Valve Guides (PN: BC3938/39) - Billet Keepers/Locks (PN: B...

over coming "challenges"...... Essentially this is a 2 part job - part one, build the foundational parts(rear cover), part two - make a filler panel . So, the filler panel would need to be light, and strong, and easily shaped - that would hold its shape. https://gallery.ostportworks.com/al...

I wont go into a lecture....... A long time ago (mid 1970s, when I worked for VW) I learned the difference between "it will fit", and, "designed to fit THIS application". I've found I NEVER get the results others seem to achieve by taking short cuts - I do still test this on occa...

When initially building Surreptitious, I had some mirror issues, (I would have liked the vintage Hellas's.... oh well) and somewhat settled on the GT mirrors that I have. https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcSPaFVrDN-SE4iCoPgg28POFK76rX6yLpizkU7IczIh5idowXLnpuO6nR4QgtgWyKLv8y6f9j4...

OK. I'd think that big aluminum ridge around the seat would do more then a bit, but I've got 0 flowbench experience and can only go by what looks aerodynamically pretty to my eye. Thanks. https://scontent.fhio2-2.fna.fbcdn.net/v/t1.0-9/71767363_678576265952246_6405435743317000192_n.jpg?_nc_cat=107&...

So... While this is going into an N2 replica, it is being fitted with timing covers to protect the timing belt, and to keep the cam seal retainers*. This requires some fabrication, as there never was a 7AGE, so the timing covers don't readily fit. Additionally, an idler is being added to the long si...

Thanks again Jondee86 and Oldeskewltoy. So, as i said in an earlier post, I need to keep the engine stock until the car has passed the individual vehicle approval test I have to put it through here in the UK. Due to the unique design of the car, on the exhaust side, i will have to fit a custom 4-2-...

I have never seen a better way to see actual porting results than that blue rubber thing :) "I have used other valves to protect seats when I've done the chamber work in the past - when I have machined seat to protect, in this case the seats haven't been cut, so I didn't need to protect them.&...

Corrected a few errors and amended the figures to something more representative of the cams that you might end up with. Didn't really have much effect on the length calculated by the program. So I am inclined to think that the length is probably less important than making sure that the airflow path...

Love the details :cheer: As I am going to use a TVS supercharger 900 or 1320 on my build, with High Lift cams, I was commended to go with 38mm (37mm) Exhaust port. Do you perhaps know if the 38mm gasket is a 1:1 copy of an TODA gasket? Just to compare what the local tuner recommends compared to you...

Bowl #8... as it transitions from stock to oversize https://gallery.ostportworks.com/albums/userpics/10005/bowl_8__3_panel.jpg a different perspective.... on the transition https://gallery.ostportworks.com/albums/userpics/10005/short_radius_3_and_4_2_panel.jpg head is now ready for the new seats to ...

Here is an example of an on-line calculator from Wallace Racing... https://i.imgur.com/T2vc1D8.jpg http://www.wallaceracing.com/intake-runner-length.php For the purposes of generating an example I have entered up a reasonable approximation (I hope :) ) of the kind of values you would be using. From...

raising the compression in a 4AG pretty much requires $$ being spent. You will either need new pistons, or a set of adjustable timing pulleys, I'd actually recommend both. ** - One thing - there are 2 different rod/crank combinations that were in largeport 4AGEs. 1984 - mid 1987 3 rib blocks, got &q...

4. You mention that you have 272 degree cams in your 4AGE. I have a pair of HIS 272 degree, 8.1mm lift cams I'm going to put in the engine once the car is registered and was wondering how they might behave i.e. how smooth is the idle with yours, whats the power range and what rpm do you make peak p...

The Exhaust gasket you are using here, what specific model is it, and from what company? The gasket was a collaboration between myself, and SV3* (before they closed). Essentially it is a Blacktop gasket(35mm port exit), that fits both 16V and 20V heads. It also has slightly "adjusted"(.02...

... and an exhaust port capable of much greater flow........




more to come....

So... after about 6 hours working #1 - all on the intake side.... I decided to do a casting for comparison https://gallery.ostportworks.com/albums/userpics/10005/casting_intakes_-_1_ported_and_2_not_ported.jpg https://gallery.ostportworks.com/albums/userpics/10005/casting_intakes_2a.jpg https://gall...

I'll have to remember these mods for the 7A-GE I want to build. Speaking of oiling and mods, would it be worthwhile to smooth out or polish the inner section of the block behind where the oil filter sits? And to radius that hole where the oil flows out and into the filter? without a doubt.... radii...

Looking forward to this build, please post as many details as possible, also about the block assembly, would be nice to have a good build tread about a 7AGE, as I am going to build one for my car :dodgy: Will you be using a 4AGE Oil pump? yes... with a few minor modifications (more later) and now i...

Epoxy instead of paint? Have you heard of ceramic coating a block, for shedding heat? I was talking to someone at a shop who has ceramic coated parts for me, was getting some ideas. I was thinking about ceramic coating the 4A block that I've been using as a guinea pig (smoothing out the inside cast...

What is the advantage of the MRP's wet sump, compared to a normal AE86 sump? 3 distinct advantages: 1) Volume... the MRP pan holds 5 quarts, the largest stock pan holds 4, and some 4AG pans holds only 3.5. 2) built in windage tray as well as baffles/trap doors to keep oil around the pick up. 3) ext...

Will you be using a 4AGE Oil pump? yes... with a few minor modifications (more later) Some of the parts..... from around the world...... Ferrea Atlantic valves (USA) https://gallery.ostportworks.com/albums/userpics/10005/valve_differences_32_vs_30_5.jpg Tec-Arts ITB adapter/kit..... (Japan) https:/...

Nice! And what about the crank shaft? Will that be MRP or 2ZZ? to remain 7A... Back in February I was contacted to build an engine for an N2 Levin replica being built in America. The client was not looking for all out power, but they did want a big valve 7AGE. About a week ago this arrived..... htt...

I suspect a lot of work going into the head for this one. Big cams and valves. Replacement of the valve seats to accommodate the new valves? This head will be similar to OST-043, so yes... a great deal of work - beginning with new valve seats. So then the owner will retain the stock internals of th...

Back in February I was contacted to build an engine for an N2 Levin replica being built in America. The client was not looking for all out power, but they did want a big valve 7AGE.

more to come.......

Were the other cyls clean & dry & smegma free? Is there going to be any more finishing/grinding the comb chamber, all the area after the 45, on the 60 to 90 and the ridge around the seat? dry for the most part, but far from free of build up.... no more work in the chambers... Blending the a...

Do you have a print out of the dyno??

Nice. Coming down to "hey there buddy with a lathe..." bits. Because everybody needs a buddy with a lathe. :D and I know somebody with a lathe.... making a new window stop because Toyota no longer does.... https://ost.ebeans.ch/albums/userpics/10005/normal_window_bushing_-_4_panel-tile.jp...