7afe internals, sumthing a lil new Options

[playr158]

7A block with F head:
1.8 liters (1,762cc)
105hp (SAE net) @ 5,200 rpm
117 lb-ft torque (SAE net) @ 2,800 rpm
Bore = 81.0mm
Stroke = 85.5mm
CR = 9.5:1


7AFE / 4AGE
rod length=.......................132.5 / 122
crank throw=.....................42.75 / 38.5
stroke=..............................85.5 / 77
Difference in compression height =14.75mm

Toyota 4AGE 1.6L DOHC 88-92 MR2
Stock Bore: 3.189, 81 mm | Stroke: 3.031 | Rod Length: 4.804 | Head cc: 39.0 | Gasket: .028 | Deck: .005

ARIAS pistons 4ag(z)e=
Bore in/mm: 3.209 / 81.50
Cr Height: 1.190
Dome CC: 7.5
Cr Ratio w/G head: 10.7
Gram Wt: 288
prt #= 3730300
ring kit prt # =1012283209

Pauter RODS-4a motor
.787” ----------------------pin diam
1.772” --------------------BE bore
4.800”---------------------length
.856” ---------------------BE width
460g ----------------------weight
TOY-200-450-1220F -----prt #

Stock 4AGZE pistons in 7A block will give you 10.8 CR (Edo got 11.06 cuz of the Bigger bore), so then using 1.5 mm head gasked you will get the CR between 9.5-9.6 and using 2mm head gasket will get you at 9-9.1 CR.
you have three options on aftermarket rods ARGO, PUATER, OR CUSTOM 700+ at min



This post has been edited by playr158: Apr 7, 2005 - 10:18 AM

[S_C_M]

Imo, you will need to calculate the CR for a 7AF with 4A pistons, or any 7AG. Deck heights are quite a bit different from that of a 4AG, as is the chamber volume of the 7A head, if you're using that.

Just a quick thing I'm sure most have already thought about, but I figured I'd throw it in for anyone who might need it.

*edit* I remember a few years back that Crower had some 7A rods in stock for around $650. Another option that may still be available.

This post has been edited by S_C_M: Apr 6, 2005 - 10:18 PM

[nik]

Imo, you will need to calculate the CR for a 7AF with 4A pistons, or any 7AG.  Deck heights are quite a bit different from that of a 4AG, as is the chamber volume of the 7A head, if you're using that.

Just a quick thing I'm sure most have already thought about, but I figured I'd throw it in for anyone who might need it.

*edit*  I remember a few years back that Crower had some 7A rods in stock for around $650.  Another option that may still be available.
[right][snapback]267515[/snapback][/right]

i looked around but dont think crower has them anymore.