Search found 8 matches

by Jester_Borris
Thu Jun 13, 2019 7:39 pm
Forum: TECH: 4A-GE ENGINE
Topic: 7AG Block, Is there a best?
Replies: 16
Views: 1218

Re: 7AG Block, Is there a best?

That is a pretty significant difference between the two. They look otherwise functionally the same.
by Jester_Borris
Tue Jun 11, 2019 6:18 pm
Forum: TECH: 4A-GE ENGINE
Topic: 7AG Block, Is there a best?
Replies: 16
Views: 1218

Re: 7AG Block, Is there a best?

That pump mod sounds really interesting. Also, the gasket pic is super helpful. Thanks OST.
by Jester_Borris
Sun Jun 09, 2019 2:00 pm
Forum: TECH: 4A-GE ENGINE
Topic: 7AG Block, Is there a best?
Replies: 16
Views: 1218

Re: 7AG Block, Is there a best?

The oil pump alignment issue is worthy to note. Any block ribbing variations like you see in the 4A? If it is helpful for you to know my considerations I will list the majority below 7a Block 20v oil pump (bt w/ static tensioner) Block girdle 20v pick up tube All ARP hardware 20v Blacktop head Forge...
by Jester_Borris
Sat Jun 08, 2019 10:09 pm
Forum: TECH: 4A-GE ENGINE
Topic: 7AG Block, Is there a best?
Replies: 16
Views: 1218

7AG Block, Is there a best?

Hello, I am looking to revive my 20V AE86 and I am considering a 7A build. I was wondering if there was a better model to source from. There are many differences in the 4A blocks depending on the model they are found in and I was wondering if the same were true of the 7A. Any guidance on this matter...
by Jester_Borris
Tue May 28, 2019 12:03 am
Forum: TECH: 4A-GE ENGINE
Topic: 20v Blacktop Spark Plug Wire / Ignition Questions
Replies: 3
Views: 1556

Re: 20v Blacktop Spark Plug Wire / Ignition Questions

Hello, For my 20V build I run the distributor on the front of the exhaust cam. I took some measurements and ordered a set of Nology Hotwires. Overkill, but they look great and will last for quite some time. I’m on my iPad and I haven’t found the method for posting a picture yet. I’ll work on that. E...
by Jester_Borris
Mon May 27, 2019 11:46 pm
Forum: TECH: 4A-GE ENGINE
Topic: 20v Blacktop High Idle
Replies: 19
Views: 6482

Re: 20v Blacktop High Idle

Hello, I’m sorry to hear of the troubles you are having. My ISCV was a mess when I started my 20V swap. This is an issues that can affect any vehicle with a separate Valve for idle air. Furthermore, you can get get TDC on an engine for the compression stroke or the exhaust stroke so when checking ba...
by Jester_Borris
Fri Feb 22, 2019 9:49 pm
Forum: TECH: 4A-GE ENGINE
Topic: Cross Plane 4AGE
Replies: 16
Views: 2446

Re: Cross Plane 4AGE

This is an incredible idea. From a tuner’s perspective, as long as I could set base timing, firing order, and base firing event in degrees of crank rotation I don’t believe there would be an issue running a COP setup for this cross-plane engine. From there it would be a straightforward catalog and b...
by Jester_Borris
Fri Feb 22, 2019 9:15 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-053: Massaging a 20V Blacktop
Replies: 22
Views: 2458

Re: OST-053: Massaging a 20V Blacktop

Excellent work as alway OST. I’m finally able to revisit my Blacktop project of 7 years ago. This is inspiring - makes me want to get on it.

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