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the general shape in the runner was kept... The lid was the main bottleneck. After much work we got the lid with TB to flow much better and am...
can the lighter 355/360 rods work in the 348? I have specs on the 348 rods in the workshop manual. Need to compare with 355/360 rod specs. -daniel
here are pics showing ported intake runners and cleaned up lid. [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH]
i made up a .75" spacer and flow test yesterday. It flowed exactly the same numbers as without the spacer. I think the only way to see what...
thanks, i'm going to see if i can get any improved numbers on the flowbench with a spacer while the head is being tested. Now i just have to make...
Nice pic Dave. It is easy to see how they bumped the OEM CR from 10.4 to 10.8 Also, all the pistons look the same height... so i guess they...
I put a spacer (to pry on) and nut back on the shaft and used a pull hammer to gently pop the shaft off the bearing in the block. This looks like...
next removed the 2 10mm bolts and pulled off the timing chain tensioner. wow... i have a lot of wear on that tensioner. [ATTACH] [ATTACH]...
took off my timing chain cover. The oil pump tensioner is in nice shape with no real groves... just polishing marks of the chain. [ATTACH]...
very interesting ernie... Now i have a project to test. I will make up a spacer and check if it improves the flow with the lid on.
wow. that is 100g lighter! anyone have a set for sale? ...may be worth upgrading.
why pistons? They look like a good design... they have narrow side skirts, narrow 1st and 2nd rings with 3mm oil ring, narrow pins. They are...
Here is mine from the other day. I had to take it out of the garage for a couple hours. [ATTACH]
OK, i now have time to hopefully complete this project by spring. We flow tested the head just to see where we are at factory... then installed...
R6 are good for the track. A6 tires have softer compound and are used for autox. A6 will get hot quicker and are good for short runs like autox...
i will need one also.
i think you are going the right direction... with -2.5 deg in front and less toe to keep the wear down. I would bring it closer to 0. I dont think...
i like! after my heads are done i will be looking for some of those. I think OEM is intake... 248 w/.360" lift ex... 244 w/.313 lift...
Great info here. i am currently rebuilding my heads and have flow tested them for a base line. OEM intakes are 30.5mm and are on the small...
here you go. 1992 348 [ATTACH]
